84857136 has 80 divisors (see below), whose sum is σ = 269816064. Its totient is φ = 22378752.

The previous prime is 84857119. The next prime is 84857147. The reversal of 84857136 is 63175848.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5346 + ... + 14081.

Almost surely, 2^84857136 is an apocalyptic number.

It is an amenable number.

84857136 is an abundant number, since it is smaller than the sum of its proper divisors (184958928).

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

84857136 is a wasteful number, since it uses less digits than its factorization.

84857136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19458 (or 19452 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 84857136 is about 9211.7933107512. The cubic root of 84857136 is about 439.4364962652.

The spelling of 84857136 in words is "eighty-four million, eight hundred fifty-seven thousand, one hundred thirty-six".