2145732 has 24 divisors (see below), whose sum is σ = 5042016. Its totient is φ = 710208.

The previous prime is 2145721. The next prime is 2145763. The reversal of 2145732 is 2375412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1408 + ... + 2504.

It is an arithmetic number, because the mean of its divisors is an integer number (210084).

2^2145732 is an apocalyptic number.

It is an amenable number.

2145732 is an abundant number, since it is smaller than the sum of its proper divisors (2896284).

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

2145732 is a wasteful number, since it uses less digits than its factorization.

2145732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1265 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 2145732 is about 1464.8317309507. The cubic root of 2145732 is about 128.9808276296.

Adding to 2145732 its product of digits (1680), we get a palindrome (2147412).

It can be divided in two parts, 21 and 45732, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 2145732 in words is "two million, one hundred forty-five thousand, seven hundred thirty-two".