820111082 has 16 divisors (see below), whose sum is σ = 1432432512. Its totient is φ = 344844240.

The previous prime is 820111067. The next prime is 820111091. The reversal of 820111082 is 280111028.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551894 + ... + 553377.

It is an arithmetic number, because the mean of its divisors is an integer number (89527032).

Almost surely, 2^820111082 is an apocalyptic number.

820111082 is a deficient number, since it is larger than the sum of its proper divisors (612321430).

820111082 is a wasteful number, since it uses less digits than its factorization.

820111082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105333.

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 820111082 is about 28637.5816367234. The cubic root of 820111082 is about 936.0324253079.

The spelling of 820111082 in words is "eight hundred twenty million, one hundred eleven thousand, eighty-two".