72647394 has 8 divisors (see below), whose sum is σ = 145294800. Its totient is φ = 24215796.

The previous prime is 72647389. The next prime is 72647411. The reversal of 72647394 is 49374627.

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

72647394 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 6053944 + ... + 6053955.

It is an arithmetic number, because the mean of its divisors is an integer number (18161850).

Almost surely, 2^72647394 is an apocalyptic number.

72647394 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72647394 is a wasteful number, since it uses less digits than its factorization.

72647394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12107904.

The product of its digits is 254016, while the sum is 42.

The square root of 72647394 is about 8523.3440620451. The cubic root of 72647394 is about 417.2599291520.

The spelling of 72647394 in words is "seventy-two million, six hundred forty-seven thousand, three hundred ninety-four".