20597492 has 12 divisors (see below), whose sum is σ = 36086820. Its totient is φ = 10286976.

The previous prime is 20597491. The next prime is 20597497. The reversal of 20597492 is 29479502.

It can be written as a sum of positive squares in 2 ways, for example, as 5262436 + 15335056 = 2294^2 + 3916^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20597491) 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 3 ways as a sum of consecutive naturals, for example, 1868 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (3007235).

Almost surely, 2^20597492 is an apocalyptic number.

It is an amenable number.

20597492 is a deficient number, since it is larger than the sum of its proper divisors (15489328).

20597492 is a wasteful number, since it uses less digits than its factorization.

20597492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890 (or 5888 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 20597492 is about 4538.4459895431. The cubic root of 20597492 is about 274.1183533316.

The spelling of 20597492 in words is "twenty million, five hundred ninety-seven thousand, four hundred ninety-two".