22857872 has 20 divisors (see below), whose sum is σ = 44370300. Its totient is φ = 11407488.

The previous prime is 22857871. The next prime is 22857917. The reversal of 22857872 is 27875822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20830096 + 2027776 = 4564^2 + 1424^2 .

It is not an unprimeable number, because it can be changed into a prime (22857871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10754 + ... + 12702.

It is an arithmetic number, because the mean of its divisors is an integer number (2218515).

Almost surely, 2^22857872 is an apocalyptic number.

It is an amenable number.

22857872 is a deficient number, since it is larger than the sum of its proper divisors (21512428).

22857872 is a wasteful number, since it uses less digits than its factorization.

22857872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690 (or 2684 counting only the distinct ones).

The product of its digits is 125440, while the sum is 41.

The square root of 22857872 is about 4780.9906923147. The cubic root of 22857872 is about 283.7997000667.

The spelling of 22857872 in words is "twenty-two million, eight hundred fifty-seven thousand, eight hundred seventy-two".