20628064 has 24 divisors (see below), whose sum is σ = 41073480. Its totient is φ = 10196736.

The previous prime is 20628061. The next prime is 20628103. The reversal of 20628064 is 46082602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20628061) 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, 774 + ... + 6469.

It is an arithmetic number, because the mean of its divisors is an integer number (1711395).

Almost surely, 2^20628064 is an apocalyptic number.

It is an amenable number.

20628064 is a deficient number, since it is larger than the sum of its proper divisors (20445416).

20628064 is an equidigital number, since it uses as much as digits as its factorization.

20628064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342 (or 7334 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20628064 is about 4541.8128539164. The cubic root of 20628064 is about 274.2539071086.

The spelling of 20628064 in words is "twenty million, six hundred twenty-eight thousand, sixty-four".