22257342 has 48 divisors (see below), whose sum is σ = 51275952. Its totient is φ = 7231680.

The previous prime is 22257317. The next prime is 22257343. The reversal of 22257342 is 24375222.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22257343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19368 + ... + 20484.

It is an arithmetic number, because the mean of its divisors is an integer number (1068249).

Almost surely, 2^22257342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22257342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25637976).

22257342 is an abundant number, since it is smaller than the sum of its proper divisors (29018610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22257342 is a wasteful number, since it uses less digits than its factorization.

22257342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1163 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22257342 is about 4717.7687522811. The cubic root of 22257342 is about 281.2922496529.

The spelling of 22257342 in words is "twenty-two million, two hundred fifty-seven thousand, three hundred forty-two".