28922157 has 16 divisors (see below), whose sum is σ = 46743360. Its totient is φ = 17528400.

The previous prime is 28922149. The next prime is 28922167. The reversal of 28922157 is 75122982.

It is not a de Polignac number, because 28922157 - 2³ = 28922149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28922167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48394 + ... + 48987.

It is an arithmetic number, because the mean of its divisors is an integer number (2921460).

Almost surely, 2^28922157 is an apocalyptic number.

28922157 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28922157 is a deficient number, since it is larger than the sum of its proper divisors (17821203).

28922157 is a wasteful number, since it uses less digits than its factorization.

28922157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97401 (or 97395 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 28922157 is about 5377.9324093930. The cubic root of 28922157 is about 306.9565415748.

The spelling of 28922157 in words is "twenty-eight million, nine hundred twenty-two thousand, one hundred fifty-seven".