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72479007 = 3217473719
BaseRepresentation
bin1000101000111…
…11000100011111
312001101022111200
410110133010133
5122023312012
611105250543
71540030026
oct424370437
9161338450
1072479007
1137a04607
1220333a53
1312028cb3
1498a98bd
15656a3dc
hex451f11f

72479007 has 12 divisors (see below), whose sum is σ = 110850480. Its totient is φ = 45476928.

The previous prime is 72478997. The next prime is 72479009. The reversal of 72479007 is 70097427.

It is not a de Polignac number, because 72479007 - 28 = 72478751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72479009) 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, 236707 + ... + 237012.

It is an arithmetic number, because the mean of its divisors is an integer number (9237540).

Almost surely, 272479007 is an apocalyptic number.

72479007 is a deficient number, since it is larger than the sum of its proper divisors (38371473).

72479007 is a wasteful number, since it uses less digits than its factorization.

72479007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473742 (or 473739 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 72479007 is about 8513.4603423050. The cubic root of 72479007 is about 416.9372954039.

The spelling of 72479007 in words is "seventy-two million, four hundred seventy-nine thousand, seven".

Divisors: 1 3 9 17 51 153 473719 1421157 4263471 8053223 24159669 72479007