84638784 has 56 divisors (see below), whose sum is σ = 237122208. Its totient is φ = 26552320.

The previous prime is 84638753. The next prime is 84638797. The reversal of 84638784 is 48783648.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 9702 + ... + 16229.

Almost surely, 2^84638784 is an apocalyptic number.

It is an amenable number.

84638784 is an abundant number, since it is smaller than the sum of its proper divisors (152483424).

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

84638784 is a wasteful number, since it uses less digits than its factorization.

84638784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25963 (or 25953 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 48.

The square root of 84638784 is about 9199.9339128061. The cubic root of 84638784 is about 439.0592572946.

The spelling of 84638784 in words is "eighty-four million, six hundred thirty-eight thousand, seven hundred eighty-four".