72964394 has 8 divisors (see below), whose sum is σ = 109757700. Its totient is φ = 36378496.

The previous prime is 72964393. The next prime is 72964399. The reversal of 72964394 is 49346927.

It can be written as a sum of positive squares in 2 ways, for example, as 68277169 + 4687225 = 8263^2 + 2165^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72964393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50969 + ... + 52380.

Almost surely, 2^72964394 is an apocalyptic number.

72964394 is a deficient number, since it is larger than the sum of its proper divisors (36793306).

72964394 is a wasteful number, since it uses less digits than its factorization.

72964394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103704.

The product of its digits is 326592, while the sum is 44.

The square root of 72964394 is about 8541.9198076311. The cubic root of 72964394 is about 417.8659590207.

The spelling of 72964394 in words is "seventy-two million, nine hundred sixty-four thousand, three hundred ninety-four".