72173037 has 8 divisors (see below), whose sum is σ = 97312320. Its totient is φ = 47574560.

The previous prime is 72173033. The next prime is 72173063. The reversal of 72173037 is 73037127.

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

It is a cyclic number.

It is not a de Polignac number, because 72173037 - 2² = 72173033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72172995 and 72173013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72173033) 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, 134889 + ... + 135422.

It is an arithmetic number, because the mean of its divisors is an integer number (12164040).

Almost surely, 2^72173037 is an apocalyptic number.

It is an amenable number.

72173037 is a deficient number, since it is larger than the sum of its proper divisors (25139283).

72173037 is a wasteful number, since it uses less digits than its factorization.

72173037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270403.

The product of its (nonzero) digits is 6174, while the sum is 30.

The square root of 72173037 is about 8495.4715584245. The cubic root of 72173037 is about 416.3497678592.

The spelling of 72173037 in words is "seventy-two million, one hundred seventy-three thousand, thirty-seven".