20539292 has 24 divisors (see below), whose sum is σ = 37288944. Its totient is φ = 9891072.

The previous prime is 20539283. The next prime is 20539297. The reversal of 20539292 is 29293502.

It is a happy number.

It is a super-2 number, since 2×20539292² = 843725031722528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20539297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15188 + ... + 16484.

It is an arithmetic number, because the mean of its divisors is an integer number (1553706).

Almost surely, 2^20539292 is an apocalyptic number.

It is an amenable number.

20539292 is a deficient number, since it is larger than the sum of its proper divisors (16749652).

20539292 is a wasteful number, since it uses less digits than its factorization.

20539292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445 (or 1443 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 20539292 is about 4532.0295674234. The cubic root of 20539292 is about 273.8599280506.

The spelling of 20539292 in words is "twenty million, five hundred thirty-nine thousand, two hundred ninety-two".