28812894 has 32 divisors (see below), whose sum is σ = 63192960. Its totient is φ = 8685600.

The previous prime is 28812877. The next prime is 28812907. The reversal of 28812894 is 49821882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12892 + ... + 14960.

It is an arithmetic number, because the mean of its divisors is an integer number (1974780).

Almost surely, 2^28812894 is an apocalyptic number.

28812894 is an abundant number, since it is smaller than the sum of its proper divisors (34380066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28812894 is a wasteful number, since it uses less digits than its factorization.

28812894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its digits is 73728, while the sum is 42.

The square root of 28812894 is about 5367.7643390894. The cubic root of 28812894 is about 306.5695105482.

It can be divided in two parts, 2881 and 2894, that added together give a palindrome (5775).

The spelling of 28812894 in words is "twenty-eight million, eight hundred twelve thousand, eight hundred ninety-four".