731970432 has 192 divisors, whose sum is σ = 2215427760. Its totient is φ = 240537600.

The previous prime is 731970431. The next prime is 731970493. The reversal of 731970432 is 234079137.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731970431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3141388 + ... + 3141620.

Almost surely, 2^731970432 is an apocalyptic number.

731970432 is a gapful number since it is divisible by the number (72) 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 731970432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107713880).

731970432 is an abundant number, since it is smaller than the sum of its proper divisors (1483457328).

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

731970432 is a wasteful number, since it uses less digits than its factorization.

731970432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 731970432 is about 27054.9520790557. The cubic root of 731970432 is about 901.2207434574.

The spelling of 731970432 in words is "seven hundred thirty-one million, nine hundred seventy thousand, four hundred thirty-two".