28272984 has 16 divisors (see below), whose sum is σ = 70682520. Its totient is φ = 9424320.

The previous prime is 28272971. The next prime is 28272997. The reversal of 28272984 is 48927282.

It is an interprime number because it is at equal distance from previous prime (28272971) and next prime (28272997).

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, 588997 + ... + 589044.

Almost surely, 2^28272984 is an apocalyptic number.

28272984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28272984 is an abundant number, since it is smaller than the sum of its proper divisors (42409536).

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

28272984 is a wasteful number, since it uses less digits than its factorization.

28272984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178050 (or 1178046 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 28272984 is about 5317.2346196120. The cubic root of 28272984 is about 304.6425410007.

The spelling of 28272984 in words is "twenty-eight million, two hundred seventy-two thousand, nine hundred eighty-four".