73472520 has 64 divisors (see below), whose sum is σ = 240459840. Its totient is φ = 17811200.

The previous prime is 73472507. The next prime is 73472549. The reversal of 73472520 is 2527437.

It is a super-2 number, since 2×73472520² = 10796422390300800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26511 + ... + 29150.

It is an arithmetic number, because the mean of its divisors is an integer number (3757185).

Almost surely, 2^73472520 is an apocalyptic number.

It is an amenable number.

73472520 is an abundant number, since it is smaller than the sum of its proper divisors (166987320).

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

73472520 is a wasteful number, since it uses less digits than its factorization.

73472520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55686 (or 55682 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 73472520 is about 8571.6112837669. The cubic root of 73472520 is about 418.8337258887.

Adding to 73472520 its reverse (2527437), we get a palindrome (75999957).

The spelling of 73472520 in words is "seventy-three million, four hundred seventy-two thousand, five hundred twenty".