84086420 has 48 divisors (see below), whose sum is σ = 203974848. Its totient is φ = 28776960.

The previous prime is 84086417. The next prime is 84086447. The reversal of 84086420 is 2468048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7502 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (4249476).

Almost surely, 2^84086420 is an apocalyptic number.

It is an amenable number.

84086420 is an abundant number, since it is smaller than the sum of its proper divisors (119888428).

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

84086420 is a wasteful number, since it uses less digits than its factorization.

84086420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22520 (or 22518 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 84086420 is about 9169.8647754479. The cubic root of 84086420 is about 438.1020522127.

The spelling of 84086420 in words is "eighty-four million, eighty-six thousand, four hundred twenty".