731738370 has 64 divisors (see below), whose sum is σ = 1920568320. Its totient is φ = 176952000.

The previous prime is 731738363. The next prime is 731738401. The reversal of 731738370 is 73837137.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142345 + ... + 147395.

It is an arithmetic number, because the mean of its divisors is an integer number (30008880).

Almost surely, 2^731738370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731738370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960284160).

731738370 is an abundant number, since it is smaller than the sum of its proper divisors (1188829950).

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

731738370 is a wasteful number, since it uses less digits than its factorization.

731738370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 731738370 is about 27050.6630232976. The cubic root of 731738370 is about 901.1254931647.

The spelling of 731738370 in words is "seven hundred thirty-one million, seven hundred thirty-eight thousand, three hundred seventy".