72137626 has 8 divisors (see below), whose sum is σ = 118043424. Its totient is φ = 32789820.

The previous prime is 72137603. The next prime is 72137669. The reversal of 72137626 is 62673127.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 72137591 and 72137600.

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, 1639470 + ... + 1639513.

It is an arithmetic number, because the mean of its divisors is an integer number (14755428).

Almost surely, 2^72137626 is an apocalyptic number.

72137626 is a deficient number, since it is larger than the sum of its proper divisors (45905798).

72137626 is a wasteful number, since it uses less digits than its factorization.

72137626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278996.

The product of its digits is 21168, while the sum is 34.

The square root of 72137626 is about 8493.3871923986. The cubic root of 72137626 is about 416.2816640625.

The spelling of 72137626 in words is "seventy-two million, one hundred thirty-seven thousand, six hundred twenty-six".