28922523 has 32 divisors (see below), whose sum is σ = 46365696. Its totient is φ = 15679488.

The previous prime is 28922521. The next prime is 28922549. The reversal of 28922523 is 32522982.

It is not a de Polignac number, because 28922523 - 2¹ = 28922521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28922521) 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, 112411 + ... + 112667.

It is an arithmetic number, because the mean of its divisors is an integer number (1448928).

Almost surely, 2^28922523 is an apocalyptic number.

28922523 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28922523 is a deficient number, since it is larger than the sum of its proper divisors (17443173).

28922523 is a wasteful number, since it uses less digits than its factorization.

28922523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

The product of its digits is 17280, while the sum is 33.

The square root of 28922523 is about 5377.9664372326. The cubic root of 28922523 is about 306.9578363793.

The spelling of 28922523 in words is "twenty-eight million, nine hundred twenty-two thousand, five hundred twenty-three".