28768522 has 32 divisors (see below), whose sum is σ = 47822400. Its totient is φ = 12918528.

The previous prime is 28768513. The next prime is 28768529. The reversal of 28768522 is 22586782.

It is not an unprimeable number, because it can be changed into a prime (28768529) 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, 160629 + ... + 160807.

It is an arithmetic number, because the mean of its divisors is an integer number (1494450).

Almost surely, 2^28768522 is an apocalyptic number.

28768522 is a deficient number, since it is larger than the sum of its proper divisors (19053878).

28768522 is a wasteful number, since it uses less digits than its factorization.

28768522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390.

The product of its digits is 107520, while the sum is 40.

The square root of 28768522 is about 5363.6295546952. The cubic root of 28768522 is about 306.4120568373.

The spelling of 28768522 in words is "twenty-eight million, seven hundred sixty-eight thousand, five hundred twenty-two".