72578383 has 4 divisors (see below), whose sum is σ = 72698560. Its totient is φ = 72458208.

The previous prime is 72578377. The next prime is 72578417. The reversal of 72578383 is 38387527.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72578383 - 2²⁵ = 39023951 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 (72578183) 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, 59178 + ... + 60391.

It is an arithmetic number, because the mean of its divisors is an integer number (18174640).

Almost surely, 2^72578383 is an apocalyptic number.

72578383 is a deficient number, since it is larger than the sum of its proper divisors (120177).

72578383 is a wasteful number, since it uses less digits than its factorization.

72578383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120176.

The product of its digits is 282240, while the sum is 43.

The square root of 72578383 is about 8519.2947478063. The cubic root of 72578383 is about 417.1277626867.

The spelling of 72578383 in words is "seventy-two million, five hundred seventy-eight thousand, three hundred eighty-three".