28369938 has 16 divisors (see below), whose sum is σ = 58059936. Its totient is φ = 9236640.

The previous prime is 28369921. The next prime is 28369949. The reversal of 28369938 is 83996382.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54723 + ... + 55238.

It is an arithmetic number, because the mean of its divisors is an integer number (3628746).

Almost surely, 2^28369938 is an apocalyptic number.

28369938 is an abundant number, since it is smaller than the sum of its proper divisors (29689998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28369938 is a wasteful number, since it uses less digits than its factorization.

28369938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110009.

The product of its digits is 559872, while the sum is 48.

The square root of 28369938 is about 5326.3437741100. The cubic root of 28369938 is about 304.9903714599.

The spelling of 28369938 in words is "twenty-eight million, three hundred sixty-nine thousand, nine hundred thirty-eight".