71814015 has 144 divisors (see below), whose sum is σ = 164436480. Its totient is φ = 28304640.

The previous prime is 71813957. The next prime is 71814023. The reversal of 71814015 is 51041817.

It is not a de Polignac number, because 71814015 - 2⁹ = 71813503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71814015.

It is a congruent number.

It is an unprimeable number.

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 143 ways as a sum of consecutive naturals, for example, 1011430 + ... + 1011500.

It is an arithmetic number, because the mean of its divisors is an integer number (1141920).

Almost surely, 2^71814015 is an apocalyptic number.

71814015 is an abundant number, since it is smaller than the sum of its proper divisors (92622465).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71814015 is a wasteful number, since it uses less digits than its factorization.

71814015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 71814015 is about 8474.3150165662. The cubic root of 71814015 is about 415.6582479668.

The spelling of 71814015 in words is "seventy-one million, eight hundred fourteen thousand, fifteen".