82789806 has 32 divisors (see below), whose sum is σ = 180955008. Its totient is φ = 25043040.

The previous prime is 82789781. The next prime is 82789807. The reversal of 82789806 is 60898728.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82789807) 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, 73161 + ... + 74283.

It is an arithmetic number, because the mean of its divisors is an integer number (5654844).

Almost surely, 2^82789806 is an apocalyptic number.

82789806 is an abundant number, since it is smaller than the sum of its proper divisors (98165202).

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

82789806 is a wasteful number, since it uses less digits than its factorization.

82789806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 82789806 is about 9098.8903719080. The cubic root of 82789806 is about 435.8385305346.

The spelling of 82789806 in words is "eighty-two million, seven hundred eighty-nine thousand, eight hundred six".