72638373 has 8 divisors (see below), whose sum is σ = 98439136. Its totient is φ = 47631600.

The previous prime is 72638369. The next prime is 72638389. The reversal of 72638373 is 37383627.

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

It is not a de Polignac number, because 72638373 - 2² = 72638369 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72638323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198283 + ... + 198648.

It is an arithmetic number, because the mean of its divisors is an integer number (12304892).

Almost surely, 2^72638373 is an apocalyptic number.

It is an amenable number.

72638373 is a deficient number, since it is larger than the sum of its proper divisors (25800763).

72638373 is a wasteful number, since it uses less digits than its factorization.

72638373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396995.

The product of its digits is 127008, while the sum is 39.

The square root of 72638373 is about 8522.8148519137. The cubic root of 72638373 is about 417.2426573343.

The spelling of 72638373 in words is "seventy-two million, six hundred thirty-eight thousand, three hundred seventy-three".