74590840 has 32 divisors (see below), whose sum is σ = 175128480. Its totient is φ = 28538752.

The previous prime is 74590819. The next prime is 74590843. The reversal of 74590840 is 4809547.

It is a self number, because there is not a number n which added to its sum of digits gives 74590840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74590843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39619 + ... + 41458.

It is an arithmetic number, because the mean of its divisors is an integer number (5472765).

Almost surely, 2^74590840 is an apocalyptic number.

It is an amenable number.

74590840 is an abundant number, since it is smaller than the sum of its proper divisors (100537640).

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

74590840 is a wasteful number, since it uses less digits than its factorization.

74590840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81111 (or 81107 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 74590840 is about 8636.5988676099. The cubic root of 74590840 is about 420.9480473690.

The spelling of 74590840 in words is "seventy-four million, five hundred ninety thousand, eight hundred forty".