28137934 has 8 divisors (see below), whose sum is σ = 46043928. Its totient is φ = 12789960.

The previous prime is 28137919. The next prime is 28137943. The reversal of 28137934 is 43973182.

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

It is a junction number, because it is equal to n+sod(n) for n = 28137893 and 28137902.

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, 639477 + ... + 639520.

It is an arithmetic number, because the mean of its divisors is an integer number (5755491).

Almost surely, 2^28137934 is an apocalyptic number.

28137934 is a deficient number, since it is larger than the sum of its proper divisors (17905994).

28137934 is a wasteful number, since it uses less digits than its factorization.

28137934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279010.

The product of its digits is 36288, while the sum is 37.

The square root of 28137934 is about 5304.5201479493. The cubic root of 28137934 is about 304.1567102348.

The spelling of 28137934 in words is "twenty-eight million, one hundred thirty-seven thousand, nine hundred thirty-four".