72471474 has 12 divisors (see below), whose sum is σ = 157021566. Its totient is φ = 24157152.

The previous prime is 72471473. The next prime is 72471479. The reversal of 72471474 is 47417427.

It can be written as a sum of positive squares in only one way, i.e., 71520849 + 950625 = 8457^2 + 975^2 .

It is a super-2 number, since 2×72471474² = 10504229087465352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72471473) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2013079 + ... + 2013114.

Almost surely, 2^72471474 is an apocalyptic number.

72471474 is an abundant number, since it is smaller than the sum of its proper divisors (84550092).

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

72471474 is a wasteful number, since it uses less digits than its factorization.

72471474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026201 (or 4026198 counting only the distinct ones).

The product of its digits is 43904, while the sum is 36.

The square root of 72471474 is about 8513.0179137601. The cubic root of 72471474 is about 416.9228503134.

The spelling of 72471474 in words is "seventy-two million, four hundred seventy-one thousand, four hundred seventy-four".