72238934 has 4 divisors (see below), whose sum is σ = 108358404. Its totient is φ = 36119466.

The previous prime is 72238919. The next prime is 72238939. The reversal of 72238934 is 43983227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43983227 = 29 ⋅1516663.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72238939) 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 as a sum of consecutive naturals, namely, 18059732 + ... + 18059735.

It is an arithmetic number, because the mean of its divisors is an integer number (27089601).

Almost surely, 2^72238934 is an apocalyptic number.

72238934 is a deficient number, since it is larger than the sum of its proper divisors (36119470).

72238934 is a wasteful number, since it uses less digits than its factorization.

72238934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36119469.

The product of its digits is 72576, while the sum is 38.

The square root of 72238934 is about 8499.3490338967. The cubic root of 72238934 is about 416.4764442280.

The spelling of 72238934 in words is "seventy-two million, two hundred thirty-eight thousand, nine hundred thirty-four".