72730419 has 8 divisors (see below), whose sum is σ = 99594960. Its totient is φ = 47176416.

The previous prime is 72730409. The next prime is 72730457. The reversal of 72730419 is 91403727.

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

It is not a de Polignac number, because 72730419 - 2²⁴ = 55953203 is a prime.

It is a super-2 number, since 2×72730419² = 10579427695831122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72730419.

It is not an unprimeable number, because it can be changed into a prime (72730409) 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, 327504 + ... + 327725.

It is an arithmetic number, because the mean of its divisors is an integer number (12449370).

Almost surely, 2^72730419 is an apocalyptic number.

72730419 is a deficient number, since it is larger than the sum of its proper divisors (26864541).

72730419 is a wasteful number, since it uses less digits than its factorization.

72730419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655269.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 72730419 is about 8528.2131188192. The cubic root of 72730419 is about 417.4188236644.

The spelling of 72730419 in words is "seventy-two million, seven hundred thirty thousand, four hundred nineteen".