22221492 has 24 divisors (see below), whose sum is σ = 52562496. Its totient is φ = 7305408.

The previous prime is 22221491. The next prime is 22221517. The reversal of 22221492 is 29412222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11808 + ... + 13559.

It is an arithmetic number, because the mean of its divisors is an integer number (2190104).

Almost surely, 2^22221492 is an apocalyptic number.

It is an amenable number.

22221492 is an abundant number, since it is smaller than the sum of its proper divisors (30341004).

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

22221492 is a wasteful number, since it uses less digits than its factorization.

22221492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25447 (or 25445 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 22221492 is about 4713.9677555113. The cubic root of 22221492 is about 281.1411422671.

The spelling of 22221492 in words is "twenty-two million, two hundred twenty-one thousand, four hundred ninety-two".