72847719 has 24 divisors (see below), whose sum is σ = 123057792. Its totient is φ = 40657680.

The previous prime is 72847673. The next prime is 72847721. The reversal of 72847719 is 91774827.

It is a happy number.

It is not a de Polignac number, because 72847719 - 2¹³ = 72839527 is a prime.

It is a super-2 number, since 2×72847719² = 10613580327005922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72847769) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10737 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (5127408).

Almost surely, 2^72847719 is an apocalyptic number.

72847719 is a deficient number, since it is larger than the sum of its proper divisors (50210073).

72847719 is a wasteful number, since it uses less digits than its factorization.

72847719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26947 (or 26944 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 72847719 is about 8535.0875215196. The cubic root of 72847719 is about 417.6431082189.

The spelling of 72847719 in words is "seventy-two million, eight hundred forty-seven thousand, seven hundred nineteen".