82711480 has 64 divisors (see below), whose sum is σ = 194529600. Its totient is φ = 31610880.

The previous prime is 82711469. The next prime is 82711483. The reversal of 82711480 is 8411728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82711483) 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, 130765 + ... + 131395.

It is an arithmetic number, because the mean of its divisors is an integer number (3039525).

Almost surely, 2^82711480 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 82711480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97264800).

82711480 is an abundant number, since it is smaller than the sum of its proper divisors (111818120).

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

82711480 is a wasteful number, since it uses less digits than its factorization.

82711480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 82711480 is about 9094.5852021959. The cubic root of 82711480 is about 435.7010407410.

The spelling of 82711480 in words is "eighty-two million, seven hundred eleven thousand, four hundred eighty".