82771404 has 24 divisors (see below), whose sum is σ = 193435200. Its totient is φ = 27547344.

The previous prime is 82771397. The next prime is 82771421. The reversal of 82771404 is 40417728.

It is a super-2 number, since 2×82771404² = 13702210640262432, which contains 22 as substring.

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, 3147 + ... + 13245.

It is an arithmetic number, because the mean of its divisors is an integer number (8059800).

Almost surely, 2^82771404 is an apocalyptic number.

It is an amenable number.

82771404 is an abundant number, since it is smaller than the sum of its proper divisors (110663796).

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

82771404 is a wasteful number, since it uses less digits than its factorization.

82771404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10789 (or 10787 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 82771404 is about 9097.8790935031. The cubic root of 82771404 is about 435.8062363214.

The spelling of 82771404 in words is "eighty-two million, seven hundred seventy-one thousand, four hundred four".