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72477276 = 2236039773
BaseRepresentation
bin1000101000111…
…10101001011100
312001101020010120
410110132221130
5122023233101
611105234540
71540022004
oct424365134
9161336116
1072477276
1137a03283
1220332a50
1312028281
1498a9004
156569b36
hex451ea5c

72477276 has 12 divisors (see below), whose sum is σ = 169113672. Its totient is φ = 24159088.

The previous prime is 72477269. The next prime is 72477281. The reversal of 72477276 is 67277427.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 3019875 + ... + 3019898.

It is an arithmetic number, because the mean of its divisors is an integer number (14092806).

Almost surely, 272477276 is an apocalyptic number.

It is an amenable number.

72477276 is an abundant number, since it is smaller than the sum of its proper divisors (96636396).

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

72477276 is a wasteful number, since it uses less digits than its factorization.

72477276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6039780 (or 6039778 counting only the distinct ones).

The product of its digits is 230496, while the sum is 42.

The square root of 72477276 is about 8513.3586791583. The cubic root of 72477276 is about 416.9339761706.

The spelling of 72477276 in words is "seventy-two million, four hundred seventy-seven thousand, two hundred seventy-six".

Divisors: 1 2 3 4 6 12 6039773 12079546 18119319 24159092 36238638 72477276