72481719 has 8 divisors (see below), whose sum is σ = 97258480. Its totient is φ = 48013056.

The previous prime is 72481711. The next prime is 72481757. The reversal of 72481719 is 91718427.

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

It is not a de Polignac number, because 72481719 - 2³ = 72481711 is a prime.

It is a super-2 number, since 2×72481719² = 10507199178389922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72481711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76474 + ... + 77415.

It is an arithmetic number, because the mean of its divisors is an integer number (12157310).

Almost surely, 2^72481719 is an apocalyptic number.

72481719 is a deficient number, since it is larger than the sum of its proper divisors (24776761).

72481719 is a wasteful number, since it uses less digits than its factorization.

72481719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154049.

The product of its digits is 28224, while the sum is 39.

The square root of 72481719 is about 8513.6196180003. The cubic root of 72481719 is about 416.9424956216.

The spelling of 72481719 in words is "seventy-two million, four hundred eighty-one thousand, seven hundred nineteen".