28383580 has 12 divisors (see below), whose sum is σ = 59605560. Its totient is φ = 11353424.

The previous prime is 28383571. The next prime is 28383601. The reversal of 28383580 is 8538382.

It is a happy number.

It is a super-2 number, since 2×28383580² = 1611255227232800, which contains 22 as substring.

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, 709570 + ... + 709609.

It is an arithmetic number, because the mean of its divisors is an integer number (4967130).

Almost surely, 2^28383580 is an apocalyptic number.

28383580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28383580 is an abundant number, since it is smaller than the sum of its proper divisors (31221980).

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

28383580 is a wasteful number, since it uses less digits than its factorization.

28383580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419188 (or 1419186 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 28383580 is about 5327.6242359986. The cubic root of 28383580 is about 305.0392496295.

The spelling of 28383580 in words is "twenty-eight million, three hundred eighty-three thousand, five hundred eighty".