22281942 has 32 divisors (see below), whose sum is σ = 46539360. Its totient is φ = 7105280.

The previous prime is 22281923. The next prime is 22281943. The reversal of 22281942 is 24918222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22281943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12184 + ... + 13892.

It is an arithmetic number, because the mean of its divisors is an integer number (1454355).

Almost surely, 2^22281942 is an apocalyptic number.

22281942 is an abundant number, since it is smaller than the sum of its proper divisors (24257418).

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

22281942 is a wasteful number, since it uses less digits than its factorization.

22281942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808.

The product of its digits is 4608, while the sum is 30.

The square root of 22281942 is about 4720.3751969520. The cubic root of 22281942 is about 281.3958445555.

The spelling of 22281942 in words is "twenty-two million, two hundred eighty-one thousand, nine hundred forty-two".