72657283 has 4 divisors (see below), whose sum is σ = 73848448. Its totient is φ = 71466120.

The previous prime is 72657281. The next prime is 72657301. The reversal of 72657283 is 38275627.

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 72657283 - 2¹ = 72657281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72657281) 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, 595491 + ... + 595612.

It is an arithmetic number, because the mean of its divisors is an integer number (18462112).

Almost surely, 2^72657283 is an apocalyptic number.

72657283 is a deficient number, since it is larger than the sum of its proper divisors (1191165).

72657283 is a wasteful number, since it uses less digits than its factorization.

72657283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191164.

The product of its digits is 141120, while the sum is 40.

The square root of 72657283 is about 8523.9241549887. The cubic root of 72657283 is about 417.2788612200.

The spelling of 72657283 in words is "seventy-two million, six hundred fifty-seven thousand, two hundred eighty-three".