84085828 has 6 divisors (see below), whose sum is σ = 147150206. Its totient is φ = 42042912.

The previous prime is 84085789. The next prime is 84085829. The reversal of 84085828 is 82858048.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 69355584 + 14730244 = 8328^2 + 3838^2 .

It is not an unprimeable number, because it can be changed into a prime (84085829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510725 + ... + 10510732.

Almost surely, 2^84085828 is an apocalyptic number.

It is an amenable number.

84085828 is a deficient number, since it is larger than the sum of its proper divisors (63064378).

84085828 is a wasteful number, since it uses less digits than its factorization.

84085828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21021461 (or 21021459 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 43.

The square root of 84085828 is about 9169.8324957439. The cubic root of 84085828 is about 438.1010240759.

It can be divided in two parts, 840 and 85828, that added together give a palindrome (86668).

The spelling of 84085828 in words is "eighty-four million, eighty-five thousand, eight hundred twenty-eight".