22507120 has 20 divisors (see below), whose sum is σ = 52329240. Its totient is φ = 9002816.

The previous prime is 22507117. The next prime is 22507123. The reversal of 22507120 is 2170522.

It is an interprime number because it is at equal distance from previous prime (22507117) and next prime (22507123).

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22507123) 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, 140590 + ... + 140749.

It is an arithmetic number, because the mean of its divisors is an integer number (2616462).

Almost surely, 2^22507120 is an apocalyptic number.

22507120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22507120 is an abundant number, since it is smaller than the sum of its proper divisors (29822120).

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

22507120 is a wasteful number, since it uses less digits than its factorization.

22507120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281352 (or 281346 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 22507120 is about 4744.1669447860. The cubic root of 22507120 is about 282.3405840861.

Adding to 22507120 its reverse (2170522), we get a palindrome (24677642).

The spelling of 22507120 in words is "twenty-two million, five hundred seven thousand, one hundred twenty".