71280855 has 24 divisors (see below), whose sum is σ = 124394400. Its totient is φ = 37757760.

The previous prime is 71280821. The next prime is 71280871. The reversal of 71280855 is 55808217.

It is not a de Polignac number, because 71280855 - 2¹² = 71276759 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1390 + ... + 12020.

It is an arithmetic number, because the mean of its divisors is an integer number (5183100).

Almost surely, 2^71280855 is an apocalyptic number.

71280855 is a deficient number, since it is larger than the sum of its proper divisors (53113545).

71280855 is a wasteful number, since it uses less digits than its factorization.

71280855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10791 (or 10788 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 71280855 is about 8442.7990027005. The cubic root of 71280855 is about 414.6270515976.

The spelling of 71280855 in words is "seventy-one million, two hundred eighty thousand, eight hundred fifty-five".