20626411 has 4 divisors (see below), whose sum is σ = 22213072. Its totient is φ = 19039752.

The previous prime is 20626399. The next prime is 20626429. The reversal of 20626411 is 11462602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20626411 - 2⁵ = 20626379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20626481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 793311 + ... + 793336.

It is an arithmetic number, because the mean of its divisors is an integer number (5553268).

Almost surely, 2^20626411 is an apocalyptic number.

20626411 is a deficient number, since it is larger than the sum of its proper divisors (1586661).

20626411 is a wasteful number, since it uses less digits than its factorization.

20626411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586660.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20626411 is about 4541.6308744767. The cubic root of 20626411 is about 274.2465812665.

The spelling of 20626411 in words is "twenty million, six hundred twenty-six thousand, four hundred eleven".