2057720 has 32 divisors (see below), whose sum is σ = 5292000. Its totient is φ = 705408.

The previous prime is 2057711. The next prime is 2057723. The reversal of 2057720 is 277502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057723) 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, 3395 + ... + 3954.

It is an arithmetic number, because the mean of its divisors is an integer number (165375).

2^2057720 is an apocalyptic number.

2057720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2057720 is an abundant number, since it is smaller than the sum of its proper divisors (3234280).

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

2057720 is a wasteful number, since it uses less digits than its factorization.

2057720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367 (or 7363 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 23.

The square root of 2057720 is about 1434.4755139074. The cubic root of 2057720 is about 127.1926725998.

The spelling of 2057720 in words is "two million, fifty-seven thousand, seven hundred twenty".