71817048 has 48 divisors (see below), whose sum is σ = 196310400. Its totient is φ = 23716800.

The previous prime is 71817043. The next prime is 71817071. The reversal of 71817048 is 84071817.

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 (71817041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3273 + ... + 12423.

It is an arithmetic number, because the mean of its divisors is an integer number (4089800).

Almost surely, 2^71817048 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 71817048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98155200).

71817048 is an abundant number, since it is smaller than the sum of its proper divisors (124493352).

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

71817048 is a wasteful number, since it uses less digits than its factorization.

71817048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9272 (or 9265 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 36.

The square root of 71817048 is about 8474.4939671936. The cubic root of 71817048 is about 415.6640995346.

It can be divided in two parts, 718 and 17048, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 71817048 in words is "seventy-one million, eight hundred seventeen thousand, forty-eight".