20257060 has 24 divisors (see below), whose sum is σ = 43263360. Its totient is φ = 7965024.

The previous prime is 20256967. The next prime is 20257067. The reversal of 20257060 is 6075202.

It is not an unprimeable number, because it can be changed into a prime (20257067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7404 + ... + 9763.

It is an arithmetic number, because the mean of its divisors is an integer number (1802640).

Almost surely, 2^20257060 is an apocalyptic number.

20257060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20257060 is an abundant number, since it is smaller than the sum of its proper divisors (23006300).

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

20257060 is a wasteful number, since it uses less digits than its factorization.

20257060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235 (or 17233 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20257060 is about 4500.7843760838. The cubic root of 20257060 is about 272.5997614700.

The spelling of 20257060 in words is "twenty million, two hundred fifty-seven thousand, sixty".