71443080 has 128 divisors (see below), whose sum is σ = 241315200. Its totient is φ = 18798336.

The previous prime is 71443079. The next prime is 71443091. The reversal of 71443080 is 8034417.

It is a super-2 number, since 2×71443080² = 10208227359772800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 16.

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 31 ways as a sum of consecutive naturals, for example, 89242 + ... + 90038.

It is an arithmetic number, because the mean of its divisors is an integer number (1885275).

Almost surely, 2^71443080 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 71443080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120657600).

71443080 is an abundant number, since it is smaller than the sum of its proper divisors (169872120).

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

71443080 is a wasteful number, since it uses less digits than its factorization.

71443080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 71443080 is about 8452.4008423643. The cubic root of 71443080 is about 414.9413571755.

Adding to 71443080 its reverse (8034417), we get a palindrome (79477497).

The spelling of 71443080 in words is "seventy-one million, four hundred forty-three thousand, eighty".