72457074 has 24 divisors (see below), whose sum is σ = 159653520. Its totient is φ = 23742648.

The previous prime is 72457067. The next prime is 72457117. The reversal of 72457074 is 47075427.

It is a happy number.

It is a Curzon 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 11 ways as a sum of consecutive naturals, for example, 33052 + ... + 35175.

It is an arithmetic number, because the mean of its divisors is an integer number (6652230).

Almost surely, 2^72457074 is an apocalyptic number.

72457074 is an abundant number, since it is smaller than the sum of its proper divisors (87196446).

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

72457074 is a wasteful number, since it uses less digits than its factorization.

72457074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68294 (or 68291 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 36.

The square root of 72457074 is about 8512.1721082224. The cubic root of 72457074 is about 416.8952344511.

The spelling of 72457074 in words is "seventy-two million, four hundred fifty-seven thousand, seventy-four".