28951145630 has 32 divisors (see below), whose sum is σ = 56857217760. Its totient is φ = 10526264320.

The previous prime is 28951145621. The next prime is 28951145683. The reversal of 28951145630 is 3654115982.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1137686 + ... + 1162854.

It is an arithmetic number, because the mean of its divisors is an integer number (1776788055).

Almost surely, 2^28951145630 is an apocalyptic number.

28951145630 is a deficient number, since it is larger than the sum of its proper divisors (27906072130).

28951145630 is a wasteful number, since it uses less digits than its factorization.

28951145630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35644.

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 28951145630 in words is "twenty-eight billion, nine hundred fifty-one million, one hundred forty-five thousand, six hundred thirty".