84828381 has 12 divisors (see below), whose sum is σ = 124322016. Its totient is φ = 51410920.

The previous prime is 84828377. The next prime is 84828389. The reversal of 84828381 is 18382848.

It is not a de Polignac number, because 84828381 - 2² = 84828377 is a prime.

It is a super-2 number, since 2×84828381² = 14391708446162322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84828389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116481 + ... + 117206.

It is an arithmetic number, because the mean of its divisors is an integer number (10360168).

Almost surely, 2^84828381 is an apocalyptic number.

It is an amenable number.

84828381 is a deficient number, since it is larger than the sum of its proper divisors (39493635).

84828381 is a wasteful number, since it uses less digits than its factorization.

84828381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233712 (or 233701 counting only the distinct ones).

The product of its digits is 98304, while the sum is 42.

The square root of 84828381 is about 9210.2324074911. The cubic root of 84828381 is about 439.3868543038.

The spelling of 84828381 in words is "eighty-four million, eight hundred twenty-eight thousand, three hundred eighty-one".