28810894 has 8 divisors (see below), whose sum is σ = 49390128. Its totient is φ = 12347520.

The previous prime is 28810889. The next prime is 28810907. The reversal of 28810894 is 49801882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28810894² = 1660135226158472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1028947 + ... + 1028974.

It is an arithmetic number, because the mean of its divisors is an integer number (6173766).

Almost surely, 2^28810894 is an apocalyptic number.

28810894 is a deficient number, since it is larger than the sum of its proper divisors (20579234).

28810894 is a wasteful number, since it uses less digits than its factorization.

28810894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057930.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 28810894 is about 5367.5780385571. The cubic root of 28810894 is about 306.5624170434.

The spelling of 28810894 in words is "twenty-eight million, eight hundred ten thousand, eight hundred ninety-four".