72110540 has 24 divisors (see below), whose sum is σ = 153917232. Its totient is φ = 28370880.

The previous prime is 72110537. The next prime is 72110569. The reversal of 72110540 is 4501127.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28334 + ... + 30773.

It is an arithmetic number, because the mean of its divisors is an integer number (6413218).

Almost surely, 2^72110540 is an apocalyptic number.

It is an amenable number.

72110540 is an abundant number, since it is smaller than the sum of its proper divisors (81806692).

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

72110540 is a wasteful number, since it uses less digits than its factorization.

72110540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59177 (or 59175 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 72110540 is about 8491.7925080633. The cubic root of 72110540 is about 416.2295561807.

Adding to 72110540 its reverse (4501127), we get a palindrome (76611667).

The spelling of 72110540 in words is "seventy-two million, one hundred ten thousand, five hundred forty".