84427824 has 40 divisors (see below), whose sum is σ = 234884272. Its totient is φ = 25977600.

The previous prime is 84427823. The next prime is 84427859. The reversal of 84427824 is 42872448.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (84427823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67027 + ... + 68274.

Almost surely, 2^84427824 is an apocalyptic number.

It is an amenable number.

84427824 is an abundant number, since it is smaller than the sum of its proper divisors (150456448).

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

84427824 is a wasteful number, since it uses less digits than its factorization.

84427824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135325 (or 135319 counting only the distinct ones).

The product of its digits is 114688, while the sum is 39.

The square root of 84427824 is about 9188.4614598963. The cubic root of 84427824 is about 438.6941724894.

The spelling of 84427824 in words is "eighty-four million, four hundred twenty-seven thousand, eight hundred twenty-four".