28555080 has 32 divisors (see below), whose sum is σ = 85665600. Its totient is φ = 7614656.

The previous prime is 28555069. The next prime is 28555091. The reversal of 28555080 is 8055582.

It is an interprime number because it is at equal distance from previous prime (28555069) and next prime (28555091).

It is a congruent number.

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, 118860 + ... + 119099.

It is an arithmetic number, because the mean of its divisors is an integer number (2677050).

Almost surely, 2^28555080 is an apocalyptic number.

28555080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28555080 is an abundant number, since it is smaller than the sum of its proper divisors (57110520).

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

28555080 is a wasteful number, since it uses less digits than its factorization.

28555080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237973 (or 237969 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 33.

The square root of 28555080 is about 5343.6953505977. The cubic root of 28555080 is about 305.6523883853.

The spelling of 28555080 in words is "twenty-eight million, five hundred fifty-five thousand, eighty".