84872784 has 40 divisors (see below), whose sum is σ = 220744800. Its totient is φ = 28098688.

The previous prime is 84872773. The next prime is 84872797. The reversal of 84872784 is 48727848.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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

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 7 ways as a sum of consecutive naturals, for example, 1219 + ... + 13085.

It is an arithmetic number, because the mean of its divisors is an integer number (5518620).

Almost surely, 2^84872784 is an apocalyptic number.

It is an amenable number.

84872784 is an abundant number, since it is smaller than the sum of its proper divisors (135872016).

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

84872784 is a wasteful number, since it uses less digits than its factorization.

84872784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12027 (or 12021 counting only the distinct ones).

The product of its digits is 802816, while the sum is 48.

The square root of 84872784 is about 9212.6426176206. The cubic root of 84872784 is about 439.4635058957.

The spelling of 84872784 in words is "eighty-four million, eight hundred seventy-two thousand, seven hundred eighty-four".