28164038 has 16 divisors (see below), whose sum is σ = 48351264. Its totient is φ = 12052800.

The previous prime is 28164013. The next prime is 28164079. The reversal of 28164038 is 83046182.

It is a junction number, because it is equal to n+sod(n) for n = 28163995 and 28164013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14738 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (3021954).

Almost surely, 2^28164038 is an apocalyptic number.

28164038 is a deficient number, since it is larger than the sum of its proper divisors (20187226).

28164038 is a wasteful number, since it uses less digits than its factorization.

28164038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28164038 is about 5306.9801205582. The cubic root of 28164038 is about 304.2507381375.

The spelling of 28164038 in words is "twenty-eight million, one hundred sixty-four thousand, thirty-eight".