72044012 has 12 divisors (see below), whose sum is σ = 126509376. Its totient is φ = 35898480.

The previous prime is 72044009. The next prime is 72044017. The reversal of 72044012 is 21044027.

It is a super-2 number, since 2×72044012² = 10380679330112288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72044017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29564 + ... + 31907.

It is an arithmetic number, because the mean of its divisors is an integer number (10542448).

Almost surely, 2^72044012 is an apocalyptic number.

It is an amenable number.

72044012 is a deficient number, since it is larger than the sum of its proper divisors (54465364).

72044012 is a wasteful number, since it uses less digits than its factorization.

72044012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61768 (or 61766 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 72044012 is about 8487.8744100040. The cubic root of 72044012 is about 416.1015146119.

Adding to 72044012 its reverse (21044027), we get a palindrome (93088039).

The spelling of 72044012 in words is "seventy-two million, forty-four thousand, twelve".