71113980 has 48 divisors (see below), whose sum is σ = 227566080. Its totient is φ = 16254528.

The previous prime is 71113949. The next prime is 71113993. The reversal of 71113980 is 8931117.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84240 + ... + 85079.

It is an arithmetic number, because the mean of its divisors is an integer number (4740960).

Almost surely, 2^71113980 is an apocalyptic number.

71113980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71113980 is an abundant number, since it is smaller than the sum of its proper divisors (156452100).

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

71113980 is a wasteful number, since it uses less digits than its factorization.

71113980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169338 (or 169336 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 30.

The square root of 71113980 is about 8432.9105295859. The cubic root of 71113980 is about 414.3032388261.

The spelling of 71113980 in words is "seventy-one million, one hundred thirteen thousand, nine hundred eighty".