28357934 has 8 divisors (see below), whose sum is σ = 46403928. Its totient is φ = 12889960.

The previous prime is 28357909. The next prime is 28357943. The reversal of 28357934 is 43975382.

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 = 28357891 and 28357900.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644477 + ... + 644520.

It is an arithmetic number, because the mean of its divisors is an integer number (5800491).

Almost surely, 2^28357934 is an apocalyptic number.

28357934 is a deficient number, since it is larger than the sum of its proper divisors (18045994).

28357934 is a wasteful number, since it uses less digits than its factorization.

28357934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289010.

The product of its digits is 181440, while the sum is 41.

The square root of 28357934 is about 5325.2168030983. The cubic root of 28357934 is about 304.9473491487.

The spelling of 28357934 in words is "twenty-eight million, three hundred fifty-seven thousand, nine hundred thirty-four".