84788420 has 24 divisors (see below), whose sum is σ = 179636184. Its totient is φ = 33614336.

The previous prime is 84788411. The next prime is 84788437. The reversal of 84788420 is 2488748.

It can be written as a sum of positive squares in 4 ways, for example, as 1156 + 84787264 = 34^2 + 9208^2 .

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, 16499 + ... + 21018.

It is an arithmetic number, because the mean of its divisors is an integer number (7484841).

Almost surely, 2^84788420 is an apocalyptic number.

It is an amenable number.

84788420 is an abundant number, since it is smaller than the sum of its proper divisors (94847764).

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

84788420 is a wasteful number, since it uses less digits than its factorization.

84788420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37639 (or 37637 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 41.

The square root of 84788420 is about 9208.0627712891. The cubic root of 84788420 is about 439.3178479338.

The spelling of 84788420 in words is "eighty-four million, seven hundred eighty-eight thousand, four hundred twenty".