172132740 has 72 divisors (see below), whose sum is σ = 562307928. Its totient is φ = 42370560.

The previous prime is 172132729. The next prime is 172132747. The reversal of 172132740 is 47231271.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2143296 + 169989444 = 1464^2 + 13038^2 .

It is not an unprimeable number, because it can be changed into a prime (172132747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34441 + ... + 39120.

Almost surely, 2^172132740 is an apocalyptic number.

172132740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172132740 is an abundant number, since it is smaller than the sum of its proper divisors (390175188).

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

172132740 is a wasteful number, since it uses less digits than its factorization.

172132740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73589 (or 73584 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 172132740 is about 13119.9367376524. The cubic root of 172132740 is about 556.2728031724.

The spelling of 172132740 in words is "one hundred seventy-two million, one hundred thirty-two thousand, seven hundred forty".