84328857 has 40 divisors (see below), whose sum is σ = 136325376. Its totient is φ = 51746688.

The previous prime is 84328801. The next prime is 84328861. The reversal of 84328857 is 75882348.

It is not a de Polignac number, because 84328857 - 2¹⁸ = 84066713 is a prime.

It is a super-2 number, since 2×84328857² = 14222712245852898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84328757) 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 39 ways as a sum of consecutive naturals, for example, 64068 + ... + 65370.

Almost surely, 2^84328857 is an apocalyptic number.

It is an amenable number.

84328857 is a deficient number, since it is larger than the sum of its proper divisors (51996519).

84328857 is a wasteful number, since it uses less digits than its factorization.

84328857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1379 (or 1370 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 84328857 is about 9183.0744851602. The cubic root of 84328857 is about 438.5226918113.

The spelling of 84328857 in words is "eighty-four million, three hundred twenty-eight thousand, eight hundred fifty-seven".