72446385 has 32 divisors (see below), whose sum is σ = 129548160. Its totient is φ = 34265600.

The previous prime is 72446377. The next prime is 72446393. The reversal of 72446385 is 58364427.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (72446377) and next prime (72446393).

It is not a de Polignac number, because 72446385 - 2³ = 72446377 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1411 + ... + 12119.

It is an arithmetic number, because the mean of its divisors is an integer number (4048380).

Almost surely, 2^72446385 is an apocalyptic number.

It is an amenable number.

72446385 is a deficient number, since it is larger than the sum of its proper divisors (57101775).

72446385 is a wasteful number, since it uses less digits than its factorization.

72446385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10769.

The product of its digits is 161280, while the sum is 39.

The square root of 72446385 is about 8511.5442194704. The cubic root of 72446385 is about 416.8747330606.

The spelling of 72446385 in words is "seventy-two million, four hundred forty-six thousand, three hundred eighty-five".