72918141 has 8 divisors (see below), whose sum is σ = 97290720. Its totient is φ = 48578832.

The previous prime is 72918133. The next prime is 72918161. The reversal of 72918141 is 14181927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72918141 - 2³ = 72918133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72918121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2650 + ... + 12363.

It is an arithmetic number, because the mean of its divisors is an integer number (12161340).

Almost surely, 2^72918141 is an apocalyptic number.

It is an amenable number.

72918141 is a deficient number, since it is larger than the sum of its proper divisors (24372579).

72918141 is a wasteful number, since it uses less digits than its factorization.

72918141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16635.

The product of its digits is 4032, while the sum is 33.

The square root of 72918141 is about 8539.2119659837. The cubic root of 72918141 is about 417.7776436175. Note that the first 3 decimals are identical.

The spelling of 72918141 in words is "seventy-two million, nine hundred eighteen thousand, one hundred forty-one".