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3012201990 = 23257397577
BaseRepresentation
bin1011001110001010…
…1000111000000110
321202220222201022200
42303202220320012
522132110430430
61214521535330
7134434203000
oct26342507006
97686881280
103012201990
111306344a36
12700944546
13390097455
142080a1370
151296a4460
hexb38a8e06

3012201990 has 96 divisors (see below), whose sum is σ = 9133300800. Its totient is φ = 688496256.

The previous prime is 3012201977. The next prime is 3012201991. The reversal of 3012201990 is 991022103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3012201991) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17919 + ... + 79658.

It is an arithmetic number, because the mean of its divisors is an integer number (95138550).

Almost surely, 23012201990 is an apocalyptic number.

3012201990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3012201990 is an abundant number, since it is smaller than the sum of its proper divisors (6121098810).

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

3012201990 is a wasteful number, since it uses less digits than its factorization.

3012201990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97611 (or 97594 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 3012201990 is about 54883.5311363983. The cubic root of 3012201990 is about 1444.2022935538.

The spelling of 3012201990 in words is "three billion, twelve million, two hundred one thousand, nine hundred ninety".

Divisors: 1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 49 63 70 90 98 105 126 147 210 245 294 315 343 441 490 630 686 735 882 1029 1470 1715 2058 2205 3087 3430 4410 5145 6174 10290 15435 30870 97577 195154 292731 487885 585462 683039 878193 975770 1366078 1463655 1756386 2049117 2927310 3415195 4098234 4390965 4781273 6147351 6830390 8781930 9562546 10245585 12294702 14343819 20491170 23906365 28687638 30736755 33468911 43031457 47812730 61473510 66937822 71719095 86062914 100406733 143438190 167344555 200813466 215157285 301220199 334689110 430314570 502033665 602440398 1004067330 1506100995 3012201990