84156212 has 12 divisors (see below), whose sum is σ = 168312480. Its totient is φ = 36066936.

The previous prime is 84156197. The next prime is 84156217. The reversal of 84156212 is 21265148.

84156212 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84156217) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1502762 + ... + 1502817.

It is an arithmetic number, because the mean of its divisors is an integer number (14026040).

Almost surely, 2^84156212 is an apocalyptic number.

It is an amenable number.

84156212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

84156212 is a wasteful number, since it uses less digits than its factorization.

84156212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005590 (or 3005588 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 84156212 is about 9173.6694948096. The cubic root of 84156212 is about 438.2232273994.

The spelling of 84156212 in words is "eighty-four million, one hundred fifty-six thousand, two hundred twelve".