28201080 has 32 divisors (see below), whose sum is σ = 84603600. Its totient is φ = 7520256.

The previous prime is 28201051. The next prime is 28201087. The reversal of 28201080 is 8010282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28201087) 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, 117385 + ... + 117624.

Almost surely, 2^28201080 is an apocalyptic number.

28201080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28201080 is an abundant number, since it is smaller than the sum of its proper divisors (56402520).

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

28201080 is a wasteful number, since it uses less digits than its factorization.

28201080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235023 (or 235019 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 28201080 is about 5310.4689058500. The cubic root of 28201080 is about 304.3840655930.

The spelling of 28201080 in words is "twenty-eight million, two hundred one thousand, eighty".