2157932 has 12 divisors (see below), whose sum is σ = 4315920. Its totient is φ = 924816.

The previous prime is 2157923. The next prime is 2157989. The reversal of 2157932 is 2397512.

2157932 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

2157932 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2157895 and 2157904.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 38507 + ... + 38562.

It is an arithmetic number, because the mean of its divisors is an integer number (359660).

2^2157932 is an apocalyptic number.

It is an amenable number.

2157932 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2157932 is a wasteful number, since it uses less digits than its factorization.

2157932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77080 (or 77078 counting only the distinct ones).

The product of its digits is 3780, while the sum is 29.

The square root of 2157932 is about 1468.9901293065. The cubic root of 2157932 is about 129.2248147948.

Adding to 2157932 its sum of digits (29), we get a square (2157961 = 1469²).

The spelling of 2157932 in words is "two million, one hundred fifty-seven thousand, nine hundred thirty-two".