20582913 has 16 divisors (see below), whose sum is σ = 29667456. Its totient is φ = 12618240.

The previous prime is 20582899. The next prime is 20582923. The reversal of 20582913 is 31928502.

It is a happy number.

It is not a de Polignac number, because 20582913 - 2¹⁶ = 20517377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20582923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11281 + ... + 12977.

It is an arithmetic number, because the mean of its divisors is an integer number (1854216).

Almost surely, 2^20582913 is an apocalyptic number.

It is an amenable number.

20582913 is a deficient number, since it is larger than the sum of its proper divisors (9084543).

20582913 is a wasteful number, since it uses less digits than its factorization.

20582913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20582913 is about 4536.8395387097. The cubic root of 20582913 is about 274.0536639877.

The spelling of 20582913 in words is "twenty million, five hundred eighty-two thousand, nine hundred thirteen".