71280860 has 24 divisors (see below), whose sum is σ = 171074400. Its totient is φ = 24439104.

The previous prime is 71280821. The next prime is 71280871. The reversal of 71280860 is 6808217.

It is a super-2 number, since 2×71280860² = 10161922004679200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254435 + ... + 254714.

It is an arithmetic number, because the mean of its divisors is an integer number (7128100).

Almost surely, 2^71280860 is an apocalyptic number.

71280860 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71280860 is an abundant number, since it is smaller than the sum of its proper divisors (99793540).

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

71280860 is a wasteful number, since it uses less digits than its factorization.

71280860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509165 (or 509163 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 71280860 is about 8442.7992988108. The cubic root of 71280860 is about 414.6270612923.

The spelling of 71280860 in words is "seventy-one million, two hundred eighty thousand, eight hundred sixty".