71912823 has 8 divisors (see below), whose sum is σ = 95935488. Its totient is φ = 47916024.

The previous prime is 71912803. The next prime is 71912833. The reversal of 71912823 is 32821917.

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

It is not a de Polignac number, because 71912823 - 2⁵ = 71912791 is a prime.

It is a super-2 number, since 2×71912823² = 10342908223658658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71912803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386 + ... + 12072.

It is an arithmetic number, because the mean of its divisors is an integer number (11991936).

Almost surely, 2^71912823 is an apocalyptic number.

71912823 is a deficient number, since it is larger than the sum of its proper divisors (24022665).

71912823 is a wasteful number, since it uses less digits than its factorization.

71912823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12933.

The product of its digits is 6048, while the sum is 33.

The square root of 71912823 is about 8480.1428643626. The cubic root of 71912823 is about 415.8487935889.

The spelling of 71912823 in words is "seventy-one million, nine hundred twelve thousand, eight hundred twenty-three".