72303393 has 4 divisors (see below), whose sum is σ = 96404528. Its totient is φ = 48202260.

The previous prime is 72303391. The next prime is 72303403. The reversal of 72303393 is 39330327.

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 not a de Polignac number, because 72303393 - 2¹ = 72303391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72303393.

It is not an unprimeable number, because it can be changed into a prime (72303391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12050563 + ... + 12050568.

It is an arithmetic number, because the mean of its divisors is an integer number (24101132).

Almost surely, 2^72303393 is an apocalyptic number.

It is an amenable number.

72303393 is a deficient number, since it is larger than the sum of its proper divisors (24101135).

72303393 is a wasteful number, since it uses less digits than its factorization.

72303393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24101134.

The product of its (nonzero) digits is 10206, while the sum is 30.

The square root of 72303393 is about 8503.1401846612. The cubic root of 72303393 is about 416.6002817616.

The spelling of 72303393 in words is "seventy-two million, three hundred three thousand, three hundred ninety-three".