22857745 has 16 divisors (see below), whose sum is σ = 29237760. Its totient is φ = 17114944.

The previous prime is 22857743. The next prime is 22857761. The reversal of 22857745 is 54775822.

It is a happy number.

It is not a de Polignac number, because 22857745 - 2¹ = 22857743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22857698 and 22857707.

It is not an unprimeable number, because it can be changed into a prime (22857743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3291 + ... + 7519.

It is an arithmetic number, because the mean of its divisors is an integer number (1827360).

Almost surely, 2^22857745 is an apocalyptic number.

It is an amenable number.

22857745 is a deficient number, since it is larger than the sum of its proper divisors (6380015).

22857745 is a wasteful number, since it uses less digits than its factorization.

22857745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4304.

The product of its digits is 156800, while the sum is 40.

The square root of 22857745 is about 4780.9774105302. The cubic root of 22857745 is about 283.7991744618.

The spelling of 22857745 in words is "twenty-two million, eight hundred fifty-seven thousand, seven hundred forty-five".