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2172070620 = 2233517236609
BaseRepresentation
bin1000000101110111…
…0010101011011100
312121101010121202000
42001131302223130
513422022224440
6555311002300
7104553203256
oct20135625334
95541117660
102172070620
11a15093895
12507509390
13288002cb5
1416868acd6
15caa51730
hex81772adc

2172070620 has 96 divisors (see below), whose sum is σ = 7155086400. Its totient is φ = 545144832.

The previous prime is 2172070609. The next prime is 2172070627. The reversal of 2172070620 is 260702712.

2172070620 is a `hidden beast` number, since 2 + 17 + 20 + 7 + 0 + 620 = 666.

2172070620 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172070627) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109125 + ... + 127484.

It is an arithmetic number, because the mean of its divisors is an integer number (74532150).

Almost surely, 22172070620 is an apocalyptic number.

2172070620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2172070620 is an abundant number, since it is smaller than the sum of its proper divisors (4983015780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2172070620 is a wasteful number, since it uses less digits than its factorization.

2172070620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236644 (or 236636 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 2172070620 is about 46605.4784333344. The cubic root of 2172070620 is about 1295.0642465008.

The spelling of 2172070620 in words is "two billion, one hundred seventy-two million, seventy thousand, six hundred twenty".

Divisors: 1 2 3 4 5 6 9 10 12 15 17 18 20 27 30 34 36 45 51 54 60 68 85 90 102 108 135 153 170 180 204 255 270 306 340 459 510 540 612 765 918 1020 1530 1836 2295 3060 4590 9180 236609 473218 709827 946436 1183045 1419654 2129481 2366090 2839308 3549135 4022353 4258962 4732180 6388443 7098270 8044706 8517924 10647405 12067059 12776886 14196540 16089412 20111765 21294810 24134118 25553772 31942215 36201177 40223530 42589620 48268236 60335295 63884430 72402354 80447060 108603531 120670590 127768860 144804708 181005885 217207062 241341180 362011770 434414124 543017655 724023540 1086035310 2172070620