2157192 has 40 divisors (see below), whose sum is σ = 6043950. Its totient is φ = 718848.

The previous prime is 2157187. The next prime is 2157209. The reversal of 2157192 is 2917512.

2157192 is a `hidden beast` number, since 2 + 1 + 571 + 92 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1920996 + 236196 = 1386^2 + 486^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1017 + ... + 2312.

2^2157192 is an apocalyptic number.

It is an amenable number.

2157192 is an abundant number, since it is smaller than the sum of its proper divisors (3886758).

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

2157192 is a wasteful number, since it uses less digits than its factorization.

2157192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3347 (or 3334 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2157192 is about 1468.7382339954. The cubic root of 2157192 is about 129.2100418091.

The spelling of 2157192 in words is "two million, one hundred fifty-seven thousand, one hundred ninety-two".