28392934 has 8 divisors (see below), whose sum is σ = 42660720. Its totient is φ = 14172696.

The previous prime is 28392919. The next prime is 28392977. The reversal of 28392934 is 43929382.

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

It is a super-2 number, since 2×28392934² = 1612317402256712, 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, 10354 + ... + 12805.

It is an arithmetic number, because the mean of its divisors is an integer number (5332590).

Almost surely, 2^28392934 is an apocalyptic number.

28392934 is a deficient number, since it is larger than the sum of its proper divisors (14267786).

28392934 is a wasteful number, since it uses less digits than its factorization.

28392934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23774.

The product of its digits is 93312, while the sum is 40.

The square root of 28392934 is about 5328.5020409117. The cubic root of 28392934 is about 305.0727551957.

The spelling of 28392934 in words is "twenty-eight million, three hundred ninety-two thousand, nine hundred thirty-four".