732401280 has 192 divisors, whose sum is σ = 2723895720. Its totient is φ = 180264960.

The previous prime is 732401269. The next prime is 732401287. The reversal of 732401280 is 82104237.

It can be written as a sum of positive squares in 4 ways, for example, as 432972864 + 299428416 = 20808^2 + 17304^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (732401287) 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, 69990 + ... + 79770.

Almost surely, 2^732401280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 732401280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1361947860).

732401280 is an abundant number, since it is smaller than the sum of its proper divisors (1991494440).

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

732401280 is a wasteful number, since it uses less digits than its factorization.

732401280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9819 (or 9804 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 732401280 is about 27062.9133686675. The cubic root of 732401280 is about 901.3975324727.

The spelling of 732401280 in words is "seven hundred thirty-two million, four hundred one thousand, two hundred eighty".