731435328 has 336 divisors, whose sum is σ = 2449714176. Its totient is φ = 206807040.

The previous prime is 731435321. The next prime is 731435329. The reversal of 731435328 is 823534137.

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

It is a junction number, because it is equal to n+sod(n) for n = 731435292 and 731435301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731435321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5338876 + ... + 5339012.

It is an arithmetic number, because the mean of its divisors is an integer number (7290816).

Almost surely, 2^731435328 is an apocalyptic number.

731435328 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731435328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1224857088).

731435328 is an abundant number, since it is smaller than the sum of its proper divisors (1718278848).

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

731435328 is a wasteful number, since it uses less digits than its factorization.

731435328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 209 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 731435328 is about 27045.0610648229. The cubic root of 731435328 is about 901.0010786703.

The spelling of 731435328 in words is "seven hundred thirty-one million, four hundred thirty-five thousand, three hundred twenty-eight".