22571320 has 32 divisors (see below), whose sum is σ = 52027920. Its totient is φ = 8807680.

The previous prime is 22571299. The next prime is 22571321. The reversal of 22571320 is 2317522.

It is a junction number, because it is equal to n+sod(n) for n = 22571291 and 22571300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22571321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5242 + ... + 8521.

Almost surely, 2^22571320 is an apocalyptic number.

22571320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22571320 is an abundant number, since it is smaller than the sum of its proper divisors (29456600).

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

22571320 is a wasteful number, since it uses less digits than its factorization.

22571320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13815 (or 13811 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 22571320 is about 4750.9283303371. The cubic root of 22571320 is about 282.6087815590.

Adding to 22571320 its reverse (2317522), we get a palindrome (24888842).

The spelling of 22571320 in words is "twenty-two million, five hundred seventy-one thousand, three hundred twenty".