731472506 has 8 divisors (see below), whose sum is σ = 1097418324. Its totient is φ = 365666400.

The previous prime is 731472479. The next prime is 731472523. The reversal of 731472506 is 605274137.

It can be written as a sum of positive squares in 2 ways, for example, as 539400625 + 192071881 = 23225^2 + 13859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20675 + ... + 43478.

Almost surely, 2^731472506 is an apocalyptic number.

731472506 is a deficient number, since it is larger than the sum of its proper divisors (365945818).

731472506 is a wasteful number, since it uses less digits than its factorization.

731472506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69856.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 731472506 is about 27045.7483904587. The cubic root of 731472506 is about 901.0163440211.

The spelling of 731472506 in words is "seven hundred thirty-one million, four hundred seventy-two thousand, five hundred six".