2057620 has 12 divisors (see below), whose sum is σ = 4321044. Its totient is φ = 823040.

The previous prime is 2057611. The next prime is 2057633. The reversal of 2057620 is 267502.

It can be written as a sum of positive squares in 2 ways, for example, as 1331716 + 725904 = 1154^2 + 852^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2057591 and 2057600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51421 + ... + 51460.

It is an arithmetic number, because the mean of its divisors is an integer number (360087).

2^2057620 is an apocalyptic number.

2057620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2057620 is an abundant number, since it is smaller than the sum of its proper divisors (2263424).

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

2057620 is a wasteful number, since it uses less digits than its factorization.

2057620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102890 (or 102888 counting only the distinct ones).

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

The square root of 2057620 is about 1434.4406575387. The cubic root of 2057620 is about 127.1906121521.

The spelling of 2057620 in words is "two million, fifty-seven thousand, six hundred twenty".