72044434 has 32 divisors (see below), whose sum is σ = 139087872. Its totient is φ = 27162000.

The previous prime is 72044431. The next prime is 72044443. The reversal of 72044434 is 43444027.

It is not an unprimeable number, because it can be changed into a prime (72044431) 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 15 ways as a sum of consecutive naturals, for example, 2772 + ... + 12319.

It is an arithmetic number, because the mean of its divisors is an integer number (4346496).

Almost surely, 2^72044434 is an apocalyptic number.

72044434 is a deficient number, since it is larger than the sum of its proper divisors (67043438).

72044434 is a wasteful number, since it uses less digits than its factorization.

72044434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15142.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 72044434 is about 8487.8992689593. The cubic root of 72044434 is about 416.1023270528.

It can be divided in two parts, 720 and 44434, that added together give a palindrome (45154).

The spelling of 72044434 in words is "seventy-two million, forty-four thousand, four hundred thirty-four".