28973590 has 16 divisors (see below), whose sum is σ = 53562672. Its totient is φ = 11276064.

The previous prime is 28973587. The next prime is 28973603. The reversal of 28973590 is 9537982.

It is a happy 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, 38784 + ... + 39523.

It is an arithmetic number, because the mean of its divisors is an integer number (3347667).

Almost surely, 2^28973590 is an apocalyptic number.

28973590 is a deficient number, since it is larger than the sum of its proper divisors (24589082).

28973590 is a wasteful number, since it uses less digits than its factorization.

28973590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78351.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 28973590 is about 5382.7121416624. The cubic root of 28973590 is about 307.1383900043.

The spelling of 28973590 in words is "twenty-eight million, nine hundred seventy-three thousand, five hundred ninety".