22254840 has 48 divisors (see below), whose sum is σ = 72329400. Its totient is φ = 5934528.

The previous prime is 22254811. The next prime is 22254851. The reversal of 22254840 is 4845222.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30550 + ... + 31269.

Almost surely, 2^22254840 is an apocalyptic number.

22254840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22254840 is an abundant number, since it is smaller than the sum of its proper divisors (50074560).

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

22254840 is a wasteful number, since it uses less digits than its factorization.

22254840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61836 (or 61829 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 22254840 is about 4717.5035771052. The cubic root of 22254840 is about 281.2817090175.

The spelling of 22254840 in words is "twenty-two million, two hundred fifty-four thousand, eight hundred forty".