2161732 has 6 divisors (see below), whose sum is σ = 3783038. Its totient is φ = 1080864.

The previous prime is 2161729. The next prime is 2161751. The reversal of 2161732 is 2371612.

It can be written as a sum of positive squares in only one way, i.e., 2027776 + 133956 = 1424^2 + 366^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270213 + ... + 270220.

2^2161732 is an apocalyptic number.

It is an amenable number.

2161732 is a deficient number, since it is larger than the sum of its proper divisors (1621306).

2161732 is a wasteful number, since it uses less digits than its factorization.

2161732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540437 (or 540435 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 2161732 is about 1470.2829659627. The cubic root of 2161732 is about 129.3006229201.

The spelling of 2161732 in words is "two million, one hundred sixty-one thousand, seven hundred thirty-two".