28951130 has 32 divisors (see below), whose sum is σ = 56851200. Its totient is φ = 10550592.

The previous prime is 28951129. The next prime is 28951157. The reversal of 28951130 is 3115982.

It is a junction number, because it is equal to n+sod(n) for n = 28951093 and 28951102.

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 15 ways as a sum of consecutive naturals, for example, 8861 + ... + 11679.

It is an arithmetic number, because the mean of its divisors is an integer number (1776600).

Almost surely, 2^28951130 is an apocalyptic number.

28951130 is a deficient number, since it is larger than the sum of its proper divisors (27900070).

28951130 is a wasteful number, since it uses less digits than its factorization.

28951130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 28951130 is about 5380.6254283308. The cubic root of 28951130 is about 307.0590060836.

The spelling of 28951130 in words is "twenty-eight million, nine hundred fifty-one thousand, one hundred thirty".