72183869 has 8 divisors (see below), whose sum is σ = 77600640. Its totient is φ = 66928896.

The previous prime is 72183851. The next prime is 72183893. The reversal of 72183869 is 96838127.

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-72183869 is a prime.

It is a super-2 number, since 2×72183869² = 10421021887618322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72183809) 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, 39524 + ... + 41309.

It is an arithmetic number, because the mean of its divisors is an integer number (9700080).

Almost surely, 2^72183869 is an apocalyptic number.

It is an amenable number.

72183869 is a deficient number, since it is larger than the sum of its proper divisors (5416771).

72183869 is a wasteful number, since it uses less digits than its factorization.

72183869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80899.

The product of its digits is 145152, while the sum is 44.

The square root of 72183869 is about 8496.1090506184. The cubic root of 72183869 is about 416.3705959287.

The spelling of 72183869 in words is "seventy-two million, one hundred eighty-three thousand, eight hundred sixty-nine".