22257340 has 24 divisors (see below), whose sum is σ = 53417952. Its totient is φ = 7631040.

The previous prime is 22257317. The next prime is 22257343. The reversal of 22257340 is 4375222.

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 7 ways as a sum of consecutive naturals, for example, 79351 + ... + 79630.

It is an arithmetic number, because the mean of its divisors is an integer number (2225748).

Almost surely, 2^22257340 is an apocalyptic number.

22257340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22257340 is an abundant number, since it is smaller than the sum of its proper divisors (31160612).

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

22257340 is a wasteful number, since it uses less digits than its factorization.

22257340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158997 (or 158995 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 22257340 is about 4717.7685403165. The cubic root of 22257340 is about 281.2922412274.

The spelling of 22257340 in words is "twenty-two million, two hundred fifty-seven thousand, three hundred forty".