20540713 has 16 divisors (see below), whose sum is σ = 21998592. Its totient is φ = 19152000.

The previous prime is 20540699. The next prime is 20540719. The reversal of 20540713 is 31704502.

It is a cyclic number.

It is not a de Polignac number, because 20540713 - 2²¹ = 18443561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20540719) 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 15 ways as a sum of consecutive naturals, for example, 107448 + ... + 107638.

It is an arithmetic number, because the mean of its divisors is an integer number (1374912).

Almost surely, 2^20540713 is an apocalyptic number.

It is an amenable number.

20540713 is a deficient number, since it is larger than the sum of its proper divisors (1457879).

20540713 is a wasteful number, since it uses less digits than its factorization.

20540713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20540713 is about 4532.1863377403. The cubic root of 20540713 is about 273.8662435228.

The spelling of 20540713 in words is "twenty million, five hundred forty thousand, seven hundred thirteen".