72104297 has 4 divisors (see below), whose sum is σ = 75899280. Its totient is φ = 68309316.

The previous prime is 72104273. The next prime is 72104299. The reversal of 72104297 is 79240127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72104297 - 2²² = 67909993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72104299) 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, 1897463 + ... + 1897500.

It is an arithmetic number, because the mean of its divisors is an integer number (18974820).

Almost surely, 2^72104297 is an apocalyptic number.

It is an amenable number.

72104297 is a deficient number, since it is larger than the sum of its proper divisors (3794983).

72104297 is a wasteful number, since it uses less digits than its factorization.

72104297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794982.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 72104297 is about 8491.4249098723. The cubic root of 72104297 is about 416.2175440851.

The spelling of 72104297 in words is "seventy-two million, one hundred four thousand, two hundred ninety-seven".