28522851 has 32 divisors (see below), whose sum is σ = 45273600. Its totient is φ = 15960672.

The previous prime is 28522847. The next prime is 28522853. The reversal of 28522851 is 15822582.

It is not a de Polignac number, because 28522851 - 2² = 28522847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28522853) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54276 + ... + 54798.

It is an arithmetic number, because the mean of its divisors is an integer number (1414800).

Almost surely, 2^28522851 is an apocalyptic number.

28522851 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28522851 is a deficient number, since it is larger than the sum of its proper divisors (16750749).

28522851 is an equidigital number, since it uses as much as digits as its factorization.

28522851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600 (or 586 counting only the distinct ones).

The product of its digits is 12800, while the sum is 33.

The square root of 28522851 is about 5340.6788894297. The cubic root of 28522851 is about 305.5373524705.

The spelling of 28522851 in words is "twenty-eight million, five hundred twenty-two thousand, eight hundred fifty-one".