84211428 has 24 divisors (see below), whose sum is σ = 224564032. Its totient is φ = 24060384.

The previous prime is 84211403. The next prime is 84211459. The reversal of 84211428 is 82411248.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 84211395 and 84211404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501175 + ... + 501342.

Almost surely, 2^84211428 is an apocalyptic number.

It is an amenable number.

84211428 is an abundant number, since it is smaller than the sum of its proper divisors (140352604).

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

84211428 is a wasteful number, since it uses less digits than its factorization.

84211428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002531 (or 1002529 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 84211428 is about 9176.6784840704. The cubic root of 84211428 is about 438.3190477914.

The spelling of 84211428 in words is "eighty-four million, two hundred eleven thousand, four hundred twenty-eight".