74478936 has 64 divisors (see below), whose sum is σ = 224006400. Its totient is φ = 20158848.

The previous prime is 74478913. The next prime is 74478947. The reversal of 74478936 is 63987447.

It is a happy number.

It is a super-2 number, since 2×74478936² = 11094223815384192, which contains 22 as substring.

It is a congruent number.

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, 8475 + ... + 14858.

It is an arithmetic number, because the mean of its divisors is an integer number (3500100).

Almost surely, 2^74478936 is an apocalyptic number.

74478936 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

74478936 is an abundant number, since it is smaller than the sum of its proper divisors (149527464).

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

74478936 is a wasteful number, since it uses less digits than its factorization.

74478936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23368 (or 23364 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 48.

The square root of 74478936 is about 8630.1179597964. The cubic root of 74478936 is about 420.7374346157.

The spelling of 74478936 in words is "seventy-four million, four hundred seventy-eight thousand, nine hundred thirty-six".