72812338 has 8 divisors (see below), whose sum is σ = 109784988. Its totient is φ = 36217344.

The previous prime is 72812303. The next prime is 72812347. The reversal of 72812338 is 83321827.

It can be written as a sum of positive squares in 2 ways, for example, as 70274689 + 2537649 = 8383^2 + 1593^2 .

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, 93931 + ... + 94702.

Almost surely, 2^72812338 is an apocalyptic number.

72812338 is a deficient number, since it is larger than the sum of its proper divisors (36972650).

72812338 is a wasteful number, since it uses less digits than its factorization.

72812338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188828.

The product of its digits is 16128, while the sum is 34.

The square root of 72812338 is about 8533.0145904012. The cubic root of 72812338 is about 417.5754830234.

The spelling of 72812338 in words is "seventy-two million, eight hundred twelve thousand, three hundred thirty-eight".