72323133 has 4 divisors (see below), whose sum is σ = 96430848. Its totient is φ = 48215420.

The previous prime is 72323131. The next prime is 72323143. The reversal of 72323133 is 33132327.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33132327 = 3 ⋅11044109.

It is a cyclic number.

It is not a de Polignac number, because 72323133 - 2¹ = 72323131 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72323131) 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, 12053853 + ... + 12053858.

It is an arithmetic number, because the mean of its divisors is an integer number (24107712).

Almost surely, 2^72323133 is an apocalyptic number.

It is an amenable number.

72323133 is a deficient number, since it is larger than the sum of its proper divisors (24107715).

72323133 is a wasteful number, since it uses less digits than its factorization.

72323133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24107714.

The product of its digits is 2268, while the sum is 24.

The square root of 72323133 is about 8504.3008530978. The cubic root of 72323133 is about 416.6381911918.

The spelling of 72323133 in words is "seventy-two million, three hundred twenty-three thousand, one hundred thirty-three".