22741820 has 12 divisors (see below), whose sum is σ = 47757864. Its totient is φ = 9096720.

The previous prime is 22741819. The next prime is 22741861. The reversal of 22741820 is 2814722.

It is a self number, because there is not a number n which added to its sum of digits gives 22741820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568526 + ... + 568565.

It is an arithmetic number, because the mean of its divisors is an integer number (3979822).

Almost surely, 2^22741820 is an apocalyptic number.

22741820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22741820 is an abundant number, since it is smaller than the sum of its proper divisors (25016044).

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

22741820 is a wasteful number, since it uses less digits than its factorization.

22741820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137100 (or 1137098 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 22741820 is about 4768.8384329939. The cubic root of 22741820 is about 283.3185905439.

The spelling of 22741820 in words is "twenty-two million, seven hundred forty-one thousand, eight hundred twenty".