72733338 has 12 divisors (see below), whose sum is σ = 157588938. Its totient is φ = 24244440.

The previous prime is 72733333. The next prime is 72733369. The reversal of 72733338 is 83333727.

It can be written as a sum of positive squares in only one way, i.e., 72641529 + 91809 = 8523^2 + 303^2 .

It is not an unprimeable number, because it can be changed into a prime (72733333) 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 5 ways as a sum of consecutive naturals, for example, 2020353 + ... + 2020388.

Almost surely, 2^72733338 is an apocalyptic number.

72733338 is an abundant number, since it is smaller than the sum of its proper divisors (84855600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72733338 is a wasteful number, since it uses less digits than its factorization.

72733338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4040749 (or 4040746 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 72733338 is about 8528.3842549454. The cubic root of 72733338 is about 417.4244078902.

The spelling of 72733338 in words is "seventy-two million, seven hundred thirty-three thousand, three hundred thirty-eight".