22442940 has 192 divisors, whose sum is σ = 79027200. Its totient is φ = 5246208.

The previous prime is 22442911. The next prime is 22442969. The reversal of 22442940 is 4924422.

It is an interprime number because it is at equal distance from previous prime (22442911) and next prime (22442969).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 161391 + ... + 161529.

It is an arithmetic number, because the mean of its divisors is an integer number (411600).

Almost surely, 2^22442940 is an apocalyptic number.

22442940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22442940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39513600).

22442940 is an abundant number, since it is smaller than the sum of its proper divisors (56584260).

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

22442940 is a wasteful number, since it uses less digits than its factorization.

22442940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 22442940 is about 4737.3980200106. The cubic root of 22442940 is about 282.0719599066.

It can be divided in two parts, 2244 and 2940, that added together give a square (5184 = 72²).

The spelling of 22442940 in words is "twenty-two million, four hundred forty-two thousand, nine hundred forty".