821076136 has 16 divisors (see below), whose sum is σ = 1539851040. Its totient is φ = 410449200.

The previous prime is 821076133. The next prime is 821076143. The reversal of 821076136 is 631670128.

It is a super-2 number, since 2×821076136² = 1348332042217380992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (821076133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44575 + ... + 60241.

It is an arithmetic number, because the mean of its divisors is an integer number (96240690).

Almost surely, 2^821076136 is an apocalyptic number.

It is an amenable number.

821076136 is a deficient number, since it is larger than the sum of its proper divisors (718774904).

821076136 is a wasteful number, since it uses less digits than its factorization.

821076136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22224 (or 22220 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 821076136 is about 28654.4261153491. The cubic root of 821076136 is about 936.3994356490.

The spelling of 821076136 in words is "eight hundred twenty-one million, seventy-six thousand, one hundred thirty-six".