82761822 has 144 divisors (see below), whose sum is σ = 220758720. Its totient is φ = 22239360.

The previous prime is 82761793. The next prime is 82761829. The reversal of 82761822 is 22816728.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82761829) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1047579 + ... + 1047657.

Almost surely, 2^82761822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82761822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110379360).

82761822 is an abundant number, since it is smaller than the sum of its proper divisors (137996898).

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

82761822 is a wasteful number, since it uses less digits than its factorization.

82761822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 145 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 82761822 is about 9097.3524720107. The cubic root of 82761822 is about 435.7894186915.

The spelling of 82761822 in words is "eighty-two million, seven hundred sixty-one thousand, eight hundred twenty-two".