731325380 has 48 divisors (see below), whose sum is σ = 1629403776. Its totient is φ = 274767360.

The previous prime is 731325379. The next prime is 731325383. The reversal of 731325380 is 83523137.

731325380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×731325380² = 1069673622864288800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (731325383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192257 + ... + 196023.

It is an arithmetic number, because the mean of its divisors is an integer number (33945912).

Almost surely, 2^731325380 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 731325380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (814701888).

731325380 is an abundant number, since it is smaller than the sum of its proper divisors (898078396).

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

731325380 is a wasteful number, since it uses less digits than its factorization.

731325380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364 (or 4362 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 731325380 is about 27043.0283067559. The cubic root of 731325380 is about 900.9559308051.

The spelling of 731325380 in words is "seven hundred thirty-one million, three hundred twenty-five thousand, three hundred eighty".