72477124 has 6 divisors (see below), whose sum is σ = 126834974. Its totient is φ = 36238560.

The previous prime is 72477109. The next prime is 72477157. The reversal of 72477124 is 42177427.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 35022724 = 6120^2 + 5918^2 .

It is a super-2 number, since 2×72477124² = 10505867006622752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72477124.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9059637 + ... + 9059644.

Almost surely, 2^72477124 is an apocalyptic number.

It is an amenable number.

72477124 is a deficient number, since it is larger than the sum of its proper divisors (54357850).

72477124 is a wasteful number, since it uses less digits than its factorization.

72477124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18119285 (or 18119283 counting only the distinct ones).

The product of its digits is 21952, while the sum is 34.

The square root of 72477124 is about 8513.3497520071. The cubic root of 72477124 is about 416.9336847045.

The spelling of 72477124 in words is "seventy-two million, four hundred seventy-seven thousand, one hundred twenty-four".