72272833 has 4 divisors (see below), whose sum is σ = 73351600. Its totient is φ = 71194068.

The previous prime is 72272821. The next prime is 72272839. The reversal of 72272833 is 33827227.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 72272833 - 2⁵ = 72272801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72272839) 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 3 ways as a sum of consecutive naturals, for example, 539283 + ... + 539416.

It is an arithmetic number, because the mean of its divisors is an integer number (18337900).

Almost surely, 2^72272833 is an apocalyptic number.

It is an amenable number.

72272833 is a deficient number, since it is larger than the sum of its proper divisors (1078767).

72272833 is a wasteful number, since it uses less digits than its factorization.

72272833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078766.

The product of its digits is 28224, while the sum is 34.

The square root of 72272833 is about 8501.3430115482. The cubic root of 72272833 is about 416.5415795893.

The spelling of 72272833 in words is "seventy-two million, two hundred seventy-two thousand, eight hundred thirty-three".