82136804 has 12 divisors (see below), whose sum is σ = 144368700. Its totient is φ = 40888608.

The previous prime is 82136797. The next prime is 82136807. The reversal of 82136804 is 40863128.

It can be written as a sum of positive squares in 2 ways, for example, as 52998400 + 29138404 = 7280^2 + 5398^2 .

It is not an unprimeable number, because it can be changed into a prime (82136807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43919 + ... + 45750.

It is an arithmetic number, because the mean of its divisors is an integer number (12030725).

Almost surely, 2^82136804 is an apocalyptic number.

It is an amenable number.

82136804 is a deficient number, since it is larger than the sum of its proper divisors (62231896).

82136804 is a wasteful number, since it uses less digits than its factorization.

82136804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89902 (or 89900 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 82136804 is about 9062.9357274561. The cubic root of 82136804 is about 434.6896169627.

The spelling of 82136804 in words is "eighty-two million, one hundred thirty-six thousand, eight hundred four".