74428790 has 16 divisors (see below), whose sum is σ = 138592080. Its totient is φ = 28744800.

The previous prime is 74428789. The next prime is 74428807. The reversal of 74428790 is 9782447.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128036 + ... + 128615.

It is an arithmetic number, because the mean of its divisors is an integer number (8662005).

Almost surely, 2^74428790 is an apocalyptic number.

74428790 is a deficient number, since it is larger than the sum of its proper divisors (64163290).

74428790 is a wasteful number, since it uses less digits than its factorization.

74428790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256687.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 74428790 is about 8627.2121800730. The cubic root of 74428790 is about 420.6429871678.

The spelling of 74428790 in words is "seventy-four million, four hundred twenty-eight thousand, seven hundred ninety".