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72100204 = 22111638641
BaseRepresentation
bin1000100110000…
…10100101101100
312000200001212221
410103002211230
5121424201304
611053205124
71533561451
oct423024554
9160601787
1072100204
1137775a50
12201907a4
1311c25757
14980b828
1564e3054
hex44c296c

72100204 has 12 divisors (see below), whose sum is σ = 137645928. Its totient is φ = 32772800.

The previous prime is 72100199. The next prime is 72100229. The reversal of 72100204 is 40200127.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 819277 + ... + 819364.

It is an arithmetic number, because the mean of its divisors is an integer number (11470494).

Almost surely, 272100204 is an apocalyptic number.

It is an amenable number.

72100204 is a deficient number, since it is larger than the sum of its proper divisors (65545724).

72100204 is a wasteful number, since it uses less digits than its factorization.

72100204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638656 (or 1638654 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 72100204 is about 8491.1838986092. The cubic root of 72100204 is about 416.2096684072.

The spelling of 72100204 in words is "seventy-two million, one hundred thousand, two hundred four".

Divisors: 1 2 4 11 22 44 1638641 3277282 6554564 18025051 36050102 72100204