28522977 has 16 divisors (see below), whose sum is σ = 43653120. Its totient is φ = 16227792.

The previous prime is 28522969. The next prime is 28522981. The reversal of 28522977 is 77922582.

It is a happy number.

It is not a de Polignac number, because 28522977 - 2³ = 28522969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28522177) 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, 2178 + ... + 7860.

It is an arithmetic number, because the mean of its divisors is an integer number (2728320).

Almost surely, 2^28522977 is an apocalyptic number.

It is an amenable number.

28522977 is a deficient number, since it is larger than the sum of its proper divisors (15130143).

28522977 is a wasteful number, since it uses less digits than its factorization.

28522977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5932.

The product of its digits is 141120, while the sum is 42.

The square root of 28522977 is about 5340.6906856698. The cubic root of 28522977 is about 305.5378023747.

The spelling of 28522977 in words is "twenty-eight million, five hundred twenty-two thousand, nine hundred seventy-seven".