28902080 has 56 divisors (see below), whose sum is σ = 69342000. Its totient is φ = 11473920.

The previous prime is 28902077. The next prime is 28902101. The reversal of 28902080 is 8020982.

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, 57671 + ... + 58169.

It is an arithmetic number, because the mean of its divisors is an integer number (1238250).

Almost surely, 2^28902080 is an apocalyptic number.

28902080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28902080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34671000).

28902080 is an abundant number, since it is smaller than the sum of its proper divisors (40439920).

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

28902080 is a wasteful number, since it uses less digits than its factorization.

28902080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697 (or 687 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28902080 is about 5376.0654757918. The cubic root of 28902080 is about 306.8854980833.

The spelling of 28902080 in words is "twenty-eight million, nine hundred two thousand, eighty".