731161200 has 480 divisors, whose sum is σ = 3006807552. Its totient is φ = 147456000.

The previous prime is 731161199. The next prime is 731161261. The reversal of 731161200 is 2161137.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3788304 + ... + 3788496.

Almost surely, 2^731161200 is an apocalyptic number.

731161200 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 731161200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1503403776).

731161200 is an abundant number, since it is smaller than the sum of its proper divisors (2275646352).

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

731161200 is a wasteful number, since it uses less digits than its factorization.

731161200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 731161200 is about 27039.9926035493. The cubic root of 731161200 is about 900.8885052700. Note that the first 3 decimals are identical.

The spelling of 731161200 in words is "seven hundred thirty-one million, one hundred sixty-one thousand, two hundred".