28632774 has 16 divisors (see below), whose sum is σ = 57792240. Its totient is φ = 9456480.

The previous prime is 28632757. The next prime is 28632781. The reversal of 28632774 is 47723682.

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, 21237 + ... + 22544.

It is an arithmetic number, because the mean of its divisors is an integer number (3612015).

Almost surely, 2^28632774 is an apocalyptic number.

28632774 is an abundant number, since it is smaller than the sum of its proper divisors (29159466).

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

28632774 is a wasteful number, since it uses less digits than its factorization.

28632774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43895.

The product of its digits is 112896, while the sum is 39.

The square root of 28632774 is about 5350.9601007670. The cubic root of 28632774 is about 305.9293484629.

The spelling of 28632774 in words is "twenty-eight million, six hundred thirty-two thousand, seven hundred seventy-four".