28632555 has 64 divisors (see below), whose sum is σ = 59673600. Its totient is φ = 12752640.

The previous prime is 28632533. The next prime is 28632559. The reversal of 28632555 is 55523682.

It is a happy number.

28632555 is a `hidden beast` number, since 286 + 325 + 55 = 666.

It is not a de Polignac number, because 28632555 - 2⁸ = 28632299 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28632559) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38376 + ... + 39114.

It is an arithmetic number, because the mean of its divisors is an integer number (932400).

Almost surely, 2^28632555 is an apocalyptic number.

28632555 is an abundant number, since it is smaller than the sum of its proper divisors (31041045).

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

28632555 is a wasteful number, since it uses less digits than its factorization.

28632555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 795 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 28632555 is about 5350.9396371105. The cubic root of 28632555 is about 305.9285684861.

The spelling of 28632555 in words is "twenty-eight million, six hundred thirty-two thousand, five hundred fifty-five".