28631894 has 12 divisors (see below), whose sum is σ = 44022924. Its totient is φ = 13958784.

The previous prime is 28631887. The next prime is 28631947. The reversal of 28631894 is 49813682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49334 + ... + 49910.

It is an arithmetic number, because the mean of its divisors is an integer number (3668577).

Almost surely, 2^28631894 is an apocalyptic number.

28631894 is a deficient number, since it is larger than the sum of its proper divisors (15391030).

28631894 is an frugal number, since it uses more digits than its factorization.

28631894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199 (or 622 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 28631894 is about 5350.8778719010. The cubic root of 28631894 is about 305.9262142855.

The spelling of 28631894 in words is "twenty-eight million, six hundred thirty-one thousand, eight hundred ninety-four".