72417372 has 12 divisors (see below), whose sum is σ = 168973896. Its totient is φ = 24139120.

The previous prime is 72417361. The next prime is 72417377. The reversal of 72417372 is 27371427.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72417377) 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, 3017379 + ... + 3017402.

It is an arithmetic number, because the mean of its divisors is an integer number (14081158).

Almost surely, 2^72417372 is an apocalyptic number.

It is an amenable number.

72417372 is an abundant number, since it is smaller than the sum of its proper divisors (96556524).

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

72417372 is a wasteful number, since it uses less digits than its factorization.

72417372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6034788 (or 6034786 counting only the distinct ones).

The product of its digits is 16464, while the sum is 33.

The square root of 72417372 is about 8509.8397164694. The cubic root of 72417372 is about 416.8190762621.

Adding to 72417372 its reverse (27371427), we get a palindrome (99788799).

The spelling of 72417372 in words is "seventy-two million, four hundred seventeen thousand, three hundred seventy-two".