22555380 has 24 divisors (see below), whose sum is σ = 63155232. Its totient is φ = 6014752.

The previous prime is 22555343. The next prime is 22555399. The reversal of 22555380 is 8355522.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187902 + ... + 188021.

It is an arithmetic number, because the mean of its divisors is an integer number (2631468).

Almost surely, 2^22555380 is an apocalyptic number.

22555380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22555380 is an abundant number, since it is smaller than the sum of its proper divisors (40599852).

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

22555380 is a wasteful number, since it uses less digits than its factorization.

22555380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375935 (or 375933 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 22555380 is about 4749.2504671790. The cubic root of 22555380 is about 282.5422392267.

The spelling of 22555380 in words is "twenty-two million, five hundred fifty-five thousand, three hundred eighty".