731667132 has 72 divisors (see below), whose sum is σ = 2129234016. Its totient is φ = 207512064.

The previous prime is 731667121. The next prime is 731667133. The reversal of 731667132 is 231766137.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731667133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23928 + ... + 45120.

Almost surely, 2^731667132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731667132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064617008).

731667132 is an abundant number, since it is smaller than the sum of its proper divisors (1397566884).

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

731667132 is a wasteful number, since it uses less digits than its factorization.

731667132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21347 (or 21342 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 731667132 is about 27049.3462397892. The cubic root of 731667132 is about 901.0962493512.

The spelling of 731667132 in words is "seven hundred thirty-one million, six hundred sixty-seven thousand, one hundred thirty-two".