22145492 has 18 divisors (see below), whose sum is σ = 41170542. Its totient is φ = 10420864.

The previous prime is 22145477. The next prime is 22145503. The reversal of 22145492 is 29454122.

It can be written as a sum of positive squares in 3 ways, for example, as 3083536 + 19061956 = 1756^2 + 4366^2 .

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 5 ways as a sum of consecutive naturals, for example, 8423 + ... + 10734.

Almost surely, 2^22145492 is an apocalyptic number.

It is an amenable number.

22145492 is a deficient number, since it is larger than the sum of its proper divisors (19025050).

22145492 is a wasteful number, since it uses less digits than its factorization.

22145492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19195 (or 19176 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 22145492 is about 4705.8997014386. The cubic root of 22145492 is about 280.8202647421.

The spelling of 22145492 in words is "twenty-two million, one hundred forty-five thousand, four hundred ninety-two".