20797359 has 48 divisors (see below), whose sum is σ = 33094656. Its totient is φ = 11577280.

The previous prime is 20797351. The next prime is 20797363. The reversal of 20797359 is 95379702.

It is not a de Polignac number, because 20797359 - 2³ = 20797351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20797359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20797351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 392377 + ... + 392429.

It is an arithmetic number, because the mean of its divisors is an integer number (689472).

Almost surely, 2^20797359 is an apocalyptic number.

20797359 is the 2438-th nonagonal number.

20797359 is a deficient number, since it is larger than the sum of its proper divisors (12297297).

20797359 is a wasteful number, since it uses less digits than its factorization.

20797359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 42.

The square root of 20797359 is about 4560.4121524266. The cubic root of 20797359 is about 275.0021333168.

The spelling of 20797359 in words is "twenty million, seven hundred ninety-seven thousand, three hundred fifty-nine".