22317280 has 24 divisors (see below), whose sum is σ = 52724952. Its totient is φ = 8926848.

The previous prime is 22317257. The next prime is 22317287. The reversal of 22317280 is 8271322.

It is a super-3 number, since 3×22317280³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22317287) 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, 69582 + ... + 69901.

It is an arithmetic number, because the mean of its divisors is an integer number (2196873).

Almost surely, 2^22317280 is an apocalyptic number.

22317280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22317280 is an abundant number, since it is smaller than the sum of its proper divisors (30407672).

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

22317280 is a wasteful number, since it uses less digits than its factorization.

22317280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139498 (or 139490 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22317280 is about 4724.1168486819. The cubic root of 22317280 is about 281.5445257030.

The spelling of 22317280 in words is "twenty-two million, three hundred seventeen thousand, two hundred eighty".