72423347 has 8 divisors (see below), whose sum is σ = 74913792. Its totient is φ = 69942600.

The previous prime is 72423331. The next prime is 72423361. The reversal of 72423347 is 74332427.

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

It is a cyclic number.

It is not a de Polignac number, because 72423347 - 2⁴ = 72423331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72423397) 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 7 ways as a sum of consecutive naturals, for example, 14822 + ... + 19092.

It is an arithmetic number, because the mean of its divisors is an integer number (9364224).

Almost surely, 2^72423347 is an apocalyptic number.

72423347 is a deficient number, since it is larger than the sum of its proper divisors (2490445).

72423347 is a wasteful number, since it uses less digits than its factorization.

72423347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4849.

The product of its digits is 28224, while the sum is 32.

The square root of 72423347 is about 8510.1907734198. The cubic root of 72423347 is about 416.8305395589.

The spelling of 72423347 in words is "seventy-two million, four hundred twenty-three thousand, three hundred forty-seven".