28577130 has 32 divisors (see below), whose sum is σ = 68731200. Its totient is φ = 7604352.

The previous prime is 28577113. The next prime is 28577137. The reversal of 28577130 is 3177582.

It is a junction number, because it is equal to n+sod(n) for n = 28577091 and 28577100.

It is not an unprimeable number, because it can be changed into a prime (28577137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21526 + ... + 22814.

It is an arithmetic number, because the mean of its divisors is an integer number (2147850).

Almost surely, 2^28577130 is an apocalyptic number.

28577130 is an abundant number, since it is smaller than the sum of its proper divisors (40154070).

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

28577130 is a wasteful number, since it uses less digits than its factorization.

28577130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 28577130 is about 5345.7581314534. The cubic root of 28577130 is about 305.7310422377.

The spelling of 28577130 in words is "twenty-eight million, five hundred seventy-seven thousand, one hundred thirty".