22755820 has 24 divisors (see below), whose sum is σ = 48954528. Its totient is φ = 8880000.

The previous prime is 22755781. The next prime is 22755833. The reversal of 22755820 is 2855722.

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, 13056 + ... + 14695.

It is an arithmetic number, because the mean of its divisors is an integer number (2039772).

Almost surely, 2^22755820 is an apocalyptic number.

22755820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22755820 is an abundant number, since it is smaller than the sum of its proper divisors (26198708).

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

22755820 is a wasteful number, since it uses less digits than its factorization.

22755820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27801 (or 27799 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 22755820 is about 4770.3060698450. The cubic root of 22755820 is about 283.3767161560.

The spelling of 22755820 in words is "twenty-two million, seven hundred fifty-five thousand, eight hundred twenty".