72383857 has 8 divisors (see below), whose sum is σ = 89087936. Its totient is φ = 57270672.

The previous prime is 72383851. The next prime is 72383879. The reversal of 72383857 is 75838327.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72383857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72383851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397623 + ... + 397804.

It is an arithmetic number, because the mean of its divisors is an integer number (11135992).

Almost surely, 2^72383857 is an apocalyptic number.

It is an amenable number.

72383857 is a deficient number, since it is larger than the sum of its proper divisors (16704079).

72383857 is a wasteful number, since it uses less digits than its factorization.

72383857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795447.

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

The square root of 72383857 is about 8507.8702975539. The cubic root of 72383857 is about 416.7547645895.

The spelling of 72383857 in words is "seventy-two million, three hundred eighty-three thousand, eight hundred fifty-seven".