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672110020 = 225103431757
BaseRepresentation
bin101000000011111…
…001010111000100
31201211200201121201
4220003321113010
52334030010040
6150405352244
722440561301
oct5003712704
91654621551
10672110020
1131543022a
12169108684
13a932594a
14653980a8
153e013a9a
hex280f95c4

672110020 has 48 divisors (see below), whose sum is σ = 1430327808. Its totient is φ = 265265280.

The previous prime is 672109973. The next prime is 672110059. The reversal of 672110020 is 20011276.

It is a self number, because there is not a number n which added to its sum of digits gives 672110020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887482 + ... + 888238.

It is an arithmetic number, because the mean of its divisors is an integer number (29798496).

Almost surely, 2672110020 is an apocalyptic number.

It is an amenable number.

672110020 is an abundant number, since it is smaller than the sum of its proper divisors (758217788).

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

672110020 is a wasteful number, since it uses less digits than its factorization.

672110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300 (or 1298 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 672110020 is about 25925.0847636030. The cubic root of 672110020 is about 875.9516264302.

Adding to 672110020 its reverse (20011276), we get a palindrome (692121296).

The spelling of 672110020 in words is "six hundred seventy-two million, one hundred ten thousand, twenty".

Divisors: 1 2 4 5 10 20 103 206 412 431 515 757 862 1030 1514 1724 2060 2155 3028 3785 4310 7570 8620 15140 44393 77971 88786 155942 177572 221965 311884 326267 389855 443930 652534 779710 887860 1305068 1559420 1631335 3262670 6525340 33605501 67211002 134422004 168027505 336055010 672110020