72287833 has 4 divisors (see below), whose sum is σ = 73825920. Its totient is φ = 70749748.

The previous prime is 72287783. The next prime is 72287849. The reversal of 72287833 is 33878227.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33878227 = 3217 ⋅10531.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72287833 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72287933) 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, 768973 + ... + 769066.

It is an arithmetic number, because the mean of its divisors is an integer number (18456480).

Almost surely, 2^72287833 is an apocalyptic number.

It is an amenable number.

72287833 is a deficient number, since it is larger than the sum of its proper divisors (1538087).

72287833 is a wasteful number, since it uses less digits than its factorization.

72287833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538086.

The product of its digits is 112896, while the sum is 40.

The square root of 72287833 is about 8502.2251793281. The cubic root of 72287833 is about 416.5703948957.

The spelling of 72287833 in words is "seventy-two million, two hundred eighty-seven thousand, eight hundred thirty-three".