71113518 has 64 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 20224512.

The previous prime is 71113501. The next prime is 71113531. The reversal of 71113518 is 81531117.

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

It is a junction number, because it is equal to n+sod(n) for n = 71113491 and 71113500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158158 + ... + 158606.

It is an arithmetic number, because the mean of its divisors is an integer number (2835000).

Almost surely, 2^71113518 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71113518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90720000).

71113518 is an abundant number, since it is smaller than the sum of its proper divisors (110326482).

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

71113518 is a wasteful number, since it uses less digits than its factorization.

71113518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 880 counting only the distinct ones).

The product of its digits is 840, while the sum is 27.

The square root of 71113518 is about 8432.8831368637. The cubic root of 71113518 is about 414.3023416349.

It can be divided in two parts, 71113 and 518, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 71113518 in words is "seventy-one million, one hundred thirteen thousand, five hundred eighteen".