20626960 has 20 divisors (see below), whose sum is σ = 47957868. Its totient is φ = 8250752.

The previous prime is 20626943. The next prime is 20626961. The reversal of 20626960 is 6962602.

It can be written as a sum of positive squares in 2 ways, for example, as 13075456 + 7551504 = 3616^2 + 2748^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (20626961) 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, 128839 + ... + 128998.

Almost surely, 2^20626960 is an apocalyptic number.

20626960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20626960 is an abundant number, since it is smaller than the sum of its proper divisors (27330908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20626960 is a wasteful number, since it uses less digits than its factorization.

20626960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257850 (or 257844 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20626960 is about 4541.6913149178. The cubic root of 20626960 is about 274.2490143936.

The spelling of 20626960 in words is "twenty million, six hundred twenty-six thousand, nine hundred sixty".