28870486 has 16 divisors (see below), whose sum is σ = 46247040. Its totient is φ = 13487040.

The previous prime is 28870477. The next prime is 28870493. The reversal of 28870486 is 68407882.

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, 6231 + ... + 9826.

It is an arithmetic number, because the mean of its divisors is an integer number (2890440).

Almost surely, 2^28870486 is an apocalyptic number.

28870486 is a deficient number, since it is larger than the sum of its proper divisors (17376554).

28870486 is a wasteful number, since it uses less digits than its factorization.

28870486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16119.

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 28870486 is about 5373.1262780620. The cubic root of 28870486 is about 306.7736344446.

The spelling of 28870486 in words is "twenty-eight million, eight hundred seventy thousand, four hundred eighty-six".