20344069 has 4 divisors (see below), whose sum is σ = 20394220. Its totient is φ = 20293920.

The previous prime is 20344057. The next prime is 20344073. The reversal of 20344069 is 96044302.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18748900 + 1595169 = 4330^2 + 1263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20344069 is a prime.

It is a super-2 number, since 2×20344069² = 827762286953522, 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 (20344039) 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, 24462 + ... + 25279.

It is an arithmetic number, because the mean of its divisors is an integer number (5098555).

Almost surely, 2^20344069 is an apocalyptic number.

It is an amenable number.

20344069 is a deficient number, since it is larger than the sum of its proper divisors (50151).

20344069 is an equidigital number, since it uses as much as digits as its factorization.

20344069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50150.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20344069 is about 4510.4400007095. The cubic root of 20344069 is about 272.9894980910.

It can be divided in two parts, 2034 and 4069, that multiplied together give a triangular number (8276346 = T₄₀₆₈).

The spelling of 20344069 in words is "twenty million, three hundred forty-four thousand, sixty-nine".