22553940 has 24 divisors (see below), whose sum is σ = 63151200. Its totient is φ = 6014368.

The previous prime is 22553933. The next prime is 22553941. The reversal of 22553940 is 4935522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 22553898 and 22553907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22553941) 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, 187890 + ... + 188009.

It is an arithmetic number, because the mean of its divisors is an integer number (2631300).

Almost surely, 2^22553940 is an apocalyptic number.

22553940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22553940 is an abundant number, since it is smaller than the sum of its proper divisors (40597260).

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

22553940 is a wasteful number, since it uses less digits than its factorization.

22553940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375911 (or 375909 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 22553940 is about 4749.0988618895. The cubic root of 22553940 is about 282.5362263304.

The spelling of 22553940 in words is "twenty-two million, five hundred fifty-three thousand, nine hundred forty".