71767480 has 48 divisors (see below), whose sum is σ = 166943160. Its totient is φ = 27766080.

The previous prime is 71767477. The next prime is 71767481. The reversal of 71767480 is 8476717.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71767481) 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, 37507 + ... + 39373.

Almost surely, 2^71767480 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 71767480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83471580).

71767480 is an abundant number, since it is smaller than the sum of its proper divisors (95175680).

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

71767480 is a wasteful number, since it uses less digits than its factorization.

71767480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940 (or 1905 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 71767480 is about 8471.5689219884. The cubic root of 71767480 is about 415.5684473151.

The spelling of 71767480 in words is "seventy-one million, seven hundred sixty-seven thousand, four hundred eighty".