72338824 has 8 divisors (see below), whose sum is σ = 135635310. Its totient is φ = 36169408.

The previous prime is 72338821. The next prime is 72338867. The reversal of 72338824 is 42883327.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 50154724 + 22184100 = 7082^2 + 4710^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (72338821) 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 as a sum of consecutive naturals, namely, 4521169 + ... + 4521184.

Almost surely, 2^72338824 is an apocalyptic number.

It is an amenable number.

72338824 is a deficient number, since it is larger than the sum of its proper divisors (63296486).

72338824 is a wasteful number, since it uses less digits than its factorization.

72338824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9042359 (or 9042355 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 72338824 is about 8505.2233362799. The cubic root of 72338824 is about 416.6683198512.

The spelling of 72338824 in words is "seventy-two million, three hundred thirty-eight thousand, eight hundred twenty-four".