72340377 has 4 divisors (see below), whose sum is σ = 96453840. Its totient is φ = 48226916.

The previous prime is 72340363. The next prime is 72340397. The reversal of 72340377 is 77304327.

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: 77304327 = 3 ⋅25768109.

It is a cyclic number.

It is not a de Polignac number, because 72340377 - 2⁴ = 72340361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72340337) 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, 12056727 + ... + 12056732.

It is an arithmetic number, because the mean of its divisors is an integer number (24113460).

Almost surely, 2^72340377 is an apocalyptic number.

It is an amenable number.

72340377 is a deficient number, since it is larger than the sum of its proper divisors (24113463).

72340377 is a wasteful number, since it uses less digits than its factorization.

72340377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24113462.

The product of its (nonzero) digits is 24696, while the sum is 33.

The square root of 72340377 is about 8505.3146326282. The cubic root of 72340377 is about 416.6713015662.

The spelling of 72340377 in words is "seventy-two million, three hundred forty thousand, three hundred seventy-seven".