2157460 has 12 divisors (see below), whose sum is σ = 4530708. Its totient is φ = 862976.

The previous prime is 2157457. The next prime is 2157481. The reversal of 2157460 is 647512.

It can be written as a sum of positive squares in 2 ways, for example, as 1633284 + 524176 = 1278^2 + 724^2 .

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, 53917 + ... + 53956.

It is an arithmetic number, because the mean of its divisors is an integer number (377559).

2^2157460 is an apocalyptic number.

2157460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2157460 is an abundant number, since it is smaller than the sum of its proper divisors (2373248).

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

2157460 is a wasteful number, since it uses less digits than its factorization.

2157460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107882 (or 107880 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2157460 is about 1468.8294659354. The cubic root of 2157460 is about 129.2153924157.

The spelling of 2157460 in words is "two million, one hundred fifty-seven thousand, four hundred sixty".