22081492 has 6 divisors (see below), whose sum is σ = 38642618. Its totient is φ = 11040744.

The previous prime is 22081481. The next prime is 22081561. The reversal of 22081492 is 29418022.

It can be written as a sum of positive squares in only one way, i.e., 19660356 + 2421136 = 4434^2 + 1556^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22081492.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2760183 + ... + 2760190.

Almost surely, 2^22081492 is an apocalyptic number.

It is an amenable number.

22081492 is a deficient number, since it is larger than the sum of its proper divisors (16561126).

22081492 is a wasteful number, since it uses less digits than its factorization.

22081492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520377 (or 5520375 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 22081492 is about 4699.0948064494. The cubic root of 22081492 is about 280.5494821952.

It can be divided in two parts, 2208149 and 2, that added together give a triangular number (2208151 = T₂₁₀₁).

The spelling of 22081492 in words is "twenty-two million, eighty-one thousand, four hundred ninety-two".