20934413 has 4 divisors (see below), whose sum is σ = 20946720. Its totient is φ = 20922108.

The previous prime is 20934401. The next prime is 20934437. The reversal of 20934413 is 31443902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20934413 - 2¹² = 20930317 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 (20934013) 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, 3095 + ... + 7172.

It is an arithmetic number, because the mean of its divisors is an integer number (5236680).

Almost surely, 2^20934413 is an apocalyptic number.

It is an amenable number.

20934413 is a deficient number, since it is larger than the sum of its proper divisors (12307).

20934413 is a wasteful number, since it uses less digits than its factorization.

20934413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12306.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20934413 is about 4575.4139703419. The cubic root of 20934413 is about 275.6048965786.

The spelling of 20934413 in words is "twenty million, nine hundred thirty-four thousand, four hundred thirteen".