72340791 has 4 divisors (see below), whose sum is σ = 96454392. Its totient is φ = 48227192.

The previous prime is 72340789. The next prime is 72340799. The reversal of 72340791 is 19704327.

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 72340791 - 2¹ = 72340789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72340799) 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, 12056796 + ... + 12056801.

It is an arithmetic number, because the mean of its divisors is an integer number (24113598).

Almost surely, 2^72340791 is an apocalyptic number.

72340791 is a deficient number, since it is larger than the sum of its proper divisors (24113601).

72340791 is a wasteful number, since it uses less digits than its factorization.

72340791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24113600.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 72340791 is about 8505.3389703174. The cubic root of 72340791 is about 416.6720964270.

It can be divided in two parts, 723 and 40791, that added together give a palindrome (41514).

The spelling of 72340791 in words is "seventy-two million, three hundred forty thousand, seven hundred ninety-one".