28394884 has 24 divisors (see below), whose sum is σ = 58623488. Its totient is φ = 11776320.

The previous prime is 28394869. The next prime is 28394887. The reversal of 28394884 is 48849382.

It is not an unprimeable number, because it can be changed into a prime (28394887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15489 + ... + 17224.

Almost surely, 2^28394884 is an apocalyptic number.

It is an amenable number.

28394884 is an abundant number, since it is smaller than the sum of its proper divisors (30228604).

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

28394884 is a wasteful number, since it uses less digits than its factorization.

28394884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32755 (or 32753 counting only the distinct ones).

The product of its digits is 442368, while the sum is 46.

The square root of 28394884 is about 5328.6850160241. The cubic root of 28394884 is about 305.0797390724.

The spelling of 28394884 in words is "twenty-eight million, three hundred ninety-four thousand, eight hundred eighty-four".