72447698 has 8 divisors (see below), whose sum is σ = 108712908. Its totient is φ = 36210064.

The previous prime is 72447689. The next prime is 72447707. The reversal of 72447698 is 89674427.

It is an interprime number because it is at equal distance from previous prime (72447689) and next prime (72447707).

It can be written as a sum of positive squares in 2 ways, for example, as 72301009 + 146689 = 8503^2 + 383^2 .

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

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 3 ways as a sum of consecutive naturals, for example, 1940 + ... + 12192.

Almost surely, 2^72447698 is an apocalyptic number.

72447698 is a deficient number, since it is larger than the sum of its proper divisors (36265210).

72447698 is a wasteful number, since it uses less digits than its factorization.

72447698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13788.

The product of its digits is 677376, while the sum is 47.

The square root of 72447698 is about 8511.6213496607. The cubic root of 72447698 is about 416.8772514895.

The spelling of 72447698 in words is "seventy-two million, four hundred forty-seven thousand, six hundred ninety-eight".