731456620 has 48 divisors (see below), whose sum is σ = 1630812960. Its totient is φ = 274627584.

The previous prime is 731456611. The next prime is 731456641. The reversal of 731456620 is 26654137.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132271 + ... + 137689.

It is an arithmetic number, because the mean of its divisors is an integer number (33975270).

Almost surely, 2^731456620 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 731456620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815406480).

731456620 is an abundant number, since it is smaller than the sum of its proper divisors (899356340).

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

731456620 is a wasteful number, since it uses less digits than its factorization.

731456620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5842 (or 5840 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 731456620 is about 27045.4547012987. The cubic root of 731456620 is about 901.0098212654.

The spelling of 731456620 in words is "seven hundred thirty-one million, four hundred fifty-six thousand, six hundred twenty".