71840726 has 8 divisors (see below), whose sum is σ = 107799984. Its totient is φ = 35907400.

The previous prime is 71840693. The next prime is 71840761. The reversal of 71840726 is 62704817.

It is a happy number.

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

It is a super-2 number, since 2×71840726² = 10322179824414152, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3551 + ... + 12501.

It is an arithmetic number, because the mean of its divisors is an integer number (13474998).

Almost surely, 2^71840726 is an apocalyptic number.

71840726 is a deficient number, since it is larger than the sum of its proper divisors (35959258).

71840726 is a wasteful number, since it uses less digits than its factorization.

71840726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12966.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 71840726 is about 8475.8908676316. The cubic root of 71840726 is about 415.7097758439.

The spelling of 71840726 in words is "seventy-one million, eight hundred forty thousand, seven hundred twenty-six".