20346064 has 20 divisors (see below), whose sum is σ = 40165956. Its totient is φ = 9980672.

The previous prime is 20346061. The next prime is 20346071. The reversal of 20346064 is 46064302.

It can be written as a sum of positive squares in 2 ways, for example, as 5198400 + 15147664 = 2280^2 + 3892^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346061) 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, 11149 + ... + 12844.

Almost surely, 2^20346064 is an apocalyptic number.

It is an amenable number.

20346064 is a deficient number, since it is larger than the sum of its proper divisors (19819892).

20346064 is a wasteful number, since it uses less digits than its factorization.

20346064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24054 (or 24048 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 20346064 is about 4510.6611488783. The cubic root of 20346064 is about 272.9984211871.

The spelling of 20346064 in words is "twenty million, three hundred forty-six thousand, sixty-four".