72344739 has 8 divisors (see below), whose sum is σ = 96550480. Its totient is φ = 48184416.

The previous prime is 72344737. The next prime is 72344749. The reversal of 72344739 is 93744327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72344739 - 2¹ = 72344737 is a prime.

It is a super-2 number, since 2×72344739² = 10467522521956242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72344697 and 72344706.

It is not an unprimeable number, because it can be changed into a prime (72344737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7444 + ... + 14145.

It is an arithmetic number, because the mean of its divisors is an integer number (12068810).

Almost surely, 2^72344739 is an apocalyptic number.

72344739 is a deficient number, since it is larger than the sum of its proper divisors (24205741).

72344739 is a wasteful number, since it uses less digits than its factorization.

72344739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22709.

The product of its digits is 127008, while the sum is 39.

The square root of 72344739 is about 8505.5710566663. The cubic root of 72344739 is about 416.6796762516.

The spelling of 72344739 in words is "seventy-two million, three hundred forty-four thousand, seven hundred thirty-nine".