20576139 has 8 divisors (see below), whose sum is σ = 27456000. Its totient is φ = 13706856.

The previous prime is 20576131. The next prime is 20576141. The reversal of 20576139 is 93167502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20576139 - 2³ = 20576131 is a prime.

It is a super-2 number, since 2×20576139² = 846754992294642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20576131) 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, 5362 + ... + 8360.

It is an arithmetic number, because the mean of its divisors is an integer number (3432000).

Almost surely, 2^20576139 is an apocalyptic number.

20576139 is a deficient number, since it is larger than the sum of its proper divisors (6879861).

20576139 is a wasteful number, since it uses less digits than its factorization.

20576139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 20576139 is about 4536.0929223286. The cubic root of 20576139 is about 274.0235962772.

The spelling of 20576139 in words is "twenty million, five hundred seventy-six thousand, one hundred thirty-nine".