71689488 has 80 divisors (see below), whose sum is σ = 201195456. Its totient is φ = 21864960.

The previous prime is 71689483. The next prime is 71689517. The reversal of 71689488 is 88498617.

It is a self number, because there is not a number n which added to its sum of digits gives 71689488.

It is not an unprimeable number, because it can be changed into a prime (71689483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81306 + ... + 82182.

Almost surely, 2^71689488 is an apocalyptic number.

71689488 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71689488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100597728).

71689488 is an abundant number, since it is smaller than the sum of its proper divisors (129505968).

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

71689488 is a wasteful number, since it uses less digits than its factorization.

71689488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032 (or 1026 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 71689488 is about 8466.9645091969. The cubic root of 71689488 is about 415.4178556073.

The spelling of 71689488 in words is "seventy-one million, six hundred eighty-nine thousand, four hundred eighty-eight".