74128934 has 16 divisors (see below), whose sum is σ = 123114816. Its totient is φ = 33191400.

The previous prime is 74128913. The next prime is 74128961. The reversal of 74128934 is 43982147.

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 7 ways as a sum of consecutive naturals, for example, 23672 + ... + 26619.

It is an arithmetic number, because the mean of its divisors is an integer number (7694676).

Almost surely, 2^74128934 is an apocalyptic number.

74128934 is a deficient number, since it is larger than the sum of its proper divisors (48985882).

74128934 is a wasteful number, since it uses less digits than its factorization.

74128934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50371.

The product of its digits is 48384, while the sum is 38.

The square root of 74128934 is about 8609.8161420555. The cubic root of 74128934 is about 420.0773364769.

The spelling of 74128934 in words is "seventy-four million, one hundred twenty-eight thousand, nine hundred thirty-four".