731993080 has 192 divisors, whose sum is σ = 2108160000. Its totient is φ = 223741440.

The previous prime is 731993051. The next prime is 731993081. The reversal of 731993080 is 80399137.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731993081) 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, 1466671 + ... + 1467169.

It is an arithmetic number, because the mean of its divisors is an integer number (10980000).

Almost surely, 2^731993080 is an apocalyptic number.

731993080 is a gapful number since it is divisible by the number (70) 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 731993080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1054080000).

731993080 is an abundant number, since it is smaller than the sum of its proper divisors (1376166920).

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

731993080 is a wasteful number, since it uses less digits than its factorization.

731993080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 731993080 is about 27055.3706313552. The cubic root of 731993080 is about 901.2300382941.

The spelling of 731993080 in words is "seven hundred thirty-one million, nine hundred ninety-three thousand, eighty".