84063420 has 216 divisors, whose sum is σ = 308481264. Its totient is φ = 19160064.

The previous prime is 84063389. The next prime is 84063433. The reversal of 84063420 is 2436048.

84063420 is a `hidden beast` number, since 8 + 4 + 0 + 634 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 237964 + ... + 238316.

It is an arithmetic number, because the mean of its divisors is an integer number (1428154).

Almost surely, 2^84063420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84063420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154240632).

84063420 is an abundant number, since it is smaller than the sum of its proper divisors (224417844).

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

84063420 is a wasteful number, since it uses less digits than its factorization.

84063420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 84063420 is about 9168.6105817621. The cubic root of 84063420 is about 438.0621041606.

Adding to 84063420 its reverse (2436048), we get a palindrome (86499468).

The spelling of 84063420 in words is "eighty-four million, sixty-three thousand, four hundred twenty".