22857149 has 8 divisors (see below), whose sum is σ = 26453760. Its totient is φ = 19343376.

The previous prime is 22857119. The next prime is 22857167. The reversal of 22857149 is 94175822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22857149 - 2²⁴ = 6079933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22857119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20114 + ... + 21219.

It is an arithmetic number, because the mean of its divisors is an integer number (3306720).

Almost surely, 2^22857149 is an apocalyptic number.

It is an amenable number.

22857149 is a deficient number, since it is larger than the sum of its proper divisors (3596611).

22857149 is an equidigital number, since it uses as much as digits as its factorization.

22857149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41419.

The product of its digits is 40320, while the sum is 38.

The square root of 22857149 is about 4780.9150797729. The cubic root of 22857149 is about 283.7967078175.

The spelling of 22857149 in words is "twenty-two million, eight hundred fifty-seven thousand, one hundred forty-nine".