20882539 has 4 divisors (see below), whose sum is σ = 21981640. Its totient is φ = 19783440.

The previous prime is 20882531. The next prime is 20882567. The reversal of 20882539 is 93528802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20882539 - 2³ = 20882531 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20882498 and 20882507.

It is not an unprimeable number, because it can be changed into a prime (20882531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549522 + ... + 549559.

It is an arithmetic number, because the mean of its divisors is an integer number (5495410).

Almost surely, 2^20882539 is an apocalyptic number.

20882539 is a deficient number, since it is larger than the sum of its proper divisors (1099101).

20882539 is a wasteful number, since it uses less digits than its factorization.

20882539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099100.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 20882539 is about 4569.7416776006. The cubic root of 20882539 is about 275.3770651216.

The spelling of 20882539 in words is "twenty million, eight hundred eighty-two thousand, five hundred thirty-nine".