22857147 has 20 divisors (see below), whose sum is σ = 35632080. Its totient is φ = 14574384.

The previous prime is 22857119. The next prime is 22857167. The reversal of 22857147 is 74175822.

It is not a de Polignac number, because 22857147 - 2¹¹ = 22855099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22857167) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4272 + ... + 7997.

It is an arithmetic number, because the mean of its divisors is an integer number (1781604).

Almost surely, 2^22857147 is an apocalyptic number.

22857147 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

22857147 is a deficient number, since it is larger than the sum of its proper divisors (12774933).

22857147 is a wasteful number, since it uses less digits than its factorization.

22857147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12304 (or 12295 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 22857147 is about 4780.9148706079. The cubic root of 22857147 is about 283.7966995401.

It can be divided in two parts, 228 and 57147, that added together give a palindrome (57375).

The spelling of 22857147 in words is "twenty-two million, eight hundred fifty-seven thousand, one hundred forty-seven".