20348613 has 12 divisors (see below), whose sum is σ = 29581708. Its totient is φ = 13478400.

The previous prime is 20348611. The next prime is 20348621. The reversal of 20348613 is 31684302.

It is a happy number.

20348613 is a `hidden beast` number, since 2 + 0 + 3 + 48 + 613 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 15539364 + 4809249 = 3942^2 + 2193^2 .

It is not a de Polignac number, because 20348613 - 2¹ = 20348611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20348611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5788 + ... + 8613.

Almost surely, 2^20348613 is an apocalyptic number.

It is an amenable number.

20348613 is a deficient number, since it is larger than the sum of its proper divisors (9233095).

20348613 is a wasteful number, since it uses less digits than its factorization.

20348613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14564 (or 14561 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20348613 is about 4510.9436928430. The cubic root of 20348613 is about 273.0098213268.

The spelling of 20348613 in words is "twenty million, three hundred forty-eight thousand, six hundred thirteen".