72338649 has 8 divisors (see below), whose sum is σ = 96499680. Its totient is φ = 48201696.

The previous prime is 72338639. The next prime is 72338671. The reversal of 72338649 is 94683327.

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

It is not a de Polignac number, because 72338649 - 2⁴ = 72338633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72338649.

It is not an unprimeable number, because it can be changed into a prime (72338639) 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, 2869 + ... + 12365.

It is an arithmetic number, because the mean of its divisors is an integer number (12062460).

Almost surely, 2^72338649 is an apocalyptic number.

It is an amenable number.

72338649 is a deficient number, since it is larger than the sum of its proper divisors (24161031).

72338649 is a wasteful number, since it uses less digits than its factorization.

72338649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12039.

The product of its digits is 217728, while the sum is 42.

The square root of 72338649 is about 8505.2130484780. The cubic root of 72338649 is about 416.6679838536.

The spelling of 72338649 in words is "seventy-two million, three hundred thirty-eight thousand, six hundred forty-nine".