74475990 has 32 divisors (see below), whose sum is σ = 198603360. Its totient is φ = 19860192.

The previous prime is 74475977. The next prime is 74476007. The reversal of 74475990 is 9957447.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 137649 + ... + 138188.

It is an arithmetic number, because the mean of its divisors is an integer number (6206355).

Almost surely, 2^74475990 is an apocalyptic number.

74475990 is an abundant number, since it is smaller than the sum of its proper divisors (124127370).

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

74475990 is a wasteful number, since it uses less digits than its factorization.

74475990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275853 (or 275847 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 74475990 is about 8629.9472767799. The cubic root of 74475990 is about 420.7318871464.

The spelling of 74475990 in words is "seventy-four million, four hundred seventy-five thousand, nine hundred ninety".