71093880 has 192 divisors, whose sum is σ = 271645920. Its totient is φ = 15897600.

The previous prime is 71093861. The next prime is 71093887. The reversal of 71093880 is 8839017.

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 Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71093887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50790 + ... + 52170.

Almost surely, 2^71093880 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 71093880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135822960).

71093880 is an abundant number, since it is smaller than the sum of its proper divisors (200552040).

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

71093880 is a wasteful number, since it uses less digits than its factorization.

71093880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1415 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 71093880 is about 8431.7186860094. The cubic root of 71093880 is about 414.2642015895.

The spelling of 71093880 in words is "seventy-one million, ninety-three thousand, eight hundred eighty".