22072293 has 6 divisors (see below), whose sum is σ = 31882214. Its totient is φ = 14714856.

The previous prime is 22072289. The next prime is 22072331. The reversal of 22072293 is 39227022.

It can be written as a sum of positive squares in only one way, i.e., 22071204 + 1089 = 4698^2 + 33^2 .

It is not a de Polignac number, because 22072293 - 2² = 22072289 is a prime.

It is a super-2 number, since 2×22072293² = 974372236555698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22072213) by changing a digit.

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, 1226230 + ... + 1226247.

Almost surely, 2^22072293 is an apocalyptic number.

It is an amenable number.

22072293 is a deficient number, since it is larger than the sum of its proper divisors (9809921).

22072293 is a wasteful number, since it uses less digits than its factorization.

22072293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452483 (or 2452480 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 22072293 is about 4698.1158989535. The cubic root of 22072293 is about 280.5105184461.

The spelling of 22072293 in words is "twenty-two million, seventy-two thousand, two hundred ninety-three".