20626469 has 4 divisors (see below), whose sum is σ = 21523296. Its totient is φ = 19729644.

The previous prime is 20626447. The next prime is 20626481. The reversal of 20626469 is 96462602.

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 20626469 - 2⁸ = 20626213 is a prime.

It is a super-2 number, since 2×20626469² = 850902446815922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20626429) 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 3 ways as a sum of consecutive naturals, for example, 448379 + ... + 448424.

It is an arithmetic number, because the mean of its divisors is an integer number (5380824).

Almost surely, 2^20626469 is an apocalyptic number.

It is an amenable number.

20626469 is a deficient number, since it is larger than the sum of its proper divisors (896827).

20626469 is an equidigital number, since it uses as much as digits as its factorization.

20626469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896826.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 20626469 is about 4541.6372598436. The cubic root of 20626469 is about 274.2468383203.

The spelling of 20626469 in words is "twenty million, six hundred twenty-six thousand, four hundred sixty-nine".