72440112 has 40 divisors (see below), whose sum is σ = 191706480. Its totient is φ = 23557120.

The previous prime is 72440083. The next prime is 72440131. The reversal of 72440112 is 21104427.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16437 + ... + 20372.

It is an arithmetic number, because the mean of its divisors is an integer number (4792662).

Almost surely, 2^72440112 is an apocalyptic number.

It is an amenable number.

72440112 is an abundant number, since it is smaller than the sum of its proper divisors (119266368).

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

72440112 is a wasteful number, since it uses less digits than its factorization.

72440112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36861 (or 36855 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 72440112 is about 8511.1757119684. The cubic root of 72440112 is about 416.8627005730.

Adding to 72440112 its reverse (21104427), we get a palindrome (93544539).

The spelling of 72440112 in words is "seventy-two million, four hundred forty thousand, one hundred twelve".