71872115 has 12 divisors (see below), whose sum is σ = 98636304. Its totient is φ = 49249344.

The previous prime is 71872111. The next prime is 71872127. The reversal of 71872115 is 51127817.

It is not a de Polignac number, because 71872115 - 2² = 71872111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71872111) 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 11 ways as a sum of consecutive naturals, for example, 49439 + ... + 50871.

It is an arithmetic number, because the mean of its divisors is an integer number (8219692).

Almost surely, 2^71872115 is an apocalyptic number.

71872115 is a deficient number, since it is larger than the sum of its proper divisors (26764189).

71872115 is an frugal number, since it uses more digits than its factorization.

71872115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878 (or 1445 counting only the distinct ones).

The product of its digits is 3920, while the sum is 32.

The square root of 71872115 is about 8477.7423291817. The cubic root of 71872115 is about 415.7703116751.

The spelling of 71872115 in words is "seventy-one million, eight hundred seventy-two thousand, one hundred fifteen".