2157030 has 40 divisors (see below), whose sum is σ = 5802192. Its totient is φ = 574992.

The previous prime is 2157017. The next prime is 2157031. The reversal of 2157030 is 307512.

2157030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2156994 and 2157012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 522 + ... + 2141.

2^2157030 is an apocalyptic number.

2157030 is an abundant number, since it is smaller than the sum of its proper divisors (3645162).

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

2157030 is a wasteful number, since it uses less digits than its factorization.

2157030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682 (or 2673 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 2157030 is about 1468.6830835820. The cubic root of 2157030 is about 129.2068072723.

The spelling of 2157030 in words is "two million, one hundred fifty-seven thousand, thirty".