72441172 has 12 divisors (see below), whose sum is σ = 130861696. Its totient is φ = 35052120.

The previous prime is 72441151. The next prime is 72441179. The reversal of 72441172 is 27114427.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 72441172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72441179) 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, 291978 + ... + 292225.

Almost surely, 2^72441172 is an apocalyptic number.

It is an amenable number.

72441172 is a deficient number, since it is larger than the sum of its proper divisors (58420524).

72441172 is a wasteful number, since it uses less digits than its factorization.

72441172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584238 (or 584236 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 72441172 is about 8511.2379828084. The cubic root of 72441172 is about 416.8647338494.

Adding to 72441172 its reverse (27114427), we get a palindrome (99555599).

The spelling of 72441172 in words is "seventy-two million, four hundred forty-one thousand, one hundred seventy-two".