71570016 has 144 divisors (see below), whose sum is σ = 235243008. Its totient is φ = 20217600.

The previous prime is 71569991. The next prime is 71570029. The reversal of 71570016 is 61007517.

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263961 + ... + 264231.

It is an arithmetic number, because the mean of its divisors is an integer number (1633632).

Almost surely, 2^71570016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71570016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117621504).

71570016 is an abundant number, since it is smaller than the sum of its proper divisors (163672992).

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

71570016 is a wasteful number, since it uses less digits than its factorization.

71570016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 27.

The square root of 71570016 is about 8459.9063824607. The cubic root of 71570016 is about 415.1869598408.

It can be divided in two parts, 715700 and 16, that added together give a square (715716 = 846²).

The spelling of 71570016 in words is "seventy-one million, five hundred seventy thousand, sixteen".