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72204984 = 23321758991
BaseRepresentation
bin1000100110111…
…00001010111000
312000212101121200
410103130022320
5121441024414
611055334200
71534506105
oct423341270
9160771550
1072204984
1137837745
1220221360
1311c61357
149837aac
156514109
hex44dc2b8

72204984 has 48 divisors (see below), whose sum is σ = 207061920. Its totient is φ = 22652160.

The previous prime is 72204971. The next prime is 72204989. The reversal of 72204984 is 48940227.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72204989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28272 + ... + 30719.

It is an arithmetic number, because the mean of its divisors is an integer number (4313790).

Almost surely, 272204984 is an apocalyptic number.

It is an amenable number.

72204984 is an abundant number, since it is smaller than the sum of its proper divisors (134856936).

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

72204984 is a wasteful number, since it uses less digits than its factorization.

72204984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59020 (or 59013 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 72204984 is about 8497.3515874065. The cubic root of 72204984 is about 416.4111904464.

The spelling of 72204984 in words is "seventy-two million, two hundred four thousand, nine hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 12 17 18 24 34 36 51 68 72 102 136 153 204 306 408 612 1224 58991 117982 176973 235964 353946 471928 530919 707892 1002847 1061838 1415784 2005694 2123676 3008541 4011388 4247352 6017082 8022776 9025623 12034164 18051246 24068328 36102492 72204984