22315320 has 48 divisors (see below), whose sum is σ = 72525960. Its totient is φ = 5950656.

The previous prime is 22315303. The next prime is 22315327. The reversal of 22315320 is 2351322.

It is a super-3 number, since 3×22315320³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22315293 and 22315302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22315327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30634 + ... + 31353.

Almost surely, 2^22315320 is an apocalyptic number.

22315320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22315320 is an abundant number, since it is smaller than the sum of its proper divisors (50210640).

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

22315320 is a wasteful number, since it uses less digits than its factorization.

22315320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62004 (or 61997 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 22315320 is about 4723.9093979457. The cubic root of 22315320 is about 281.5362833092.

Adding to 22315320 its reverse (2351322), we get a palindrome (24666642).

The spelling of 22315320 in words is "twenty-two million, three hundred fifteen thousand, three hundred twenty".