84345012 has 36 divisors (see below), whose sum is σ = 214119360. Its totient is φ = 27994512.

The previous prime is 84344993. The next prime is 84345013. The reversal of 84345012 is 21054348.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×84345012² = 14228162098560288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84345013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3703 + ... + 13505.

It is an arithmetic number, because the mean of its divisors is an integer number (5947760).

Almost surely, 2^84345012 is an apocalyptic number.

It is an amenable number.

84345012 is an abundant number, since it is smaller than the sum of its proper divisors (129774348).

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

84345012 is a wasteful number, since it uses less digits than its factorization.

84345012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10052 (or 10047 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 84345012 is about 9183.9540504077. The cubic root of 84345012 is about 438.5506928302.

It can be divided in two parts, 843 and 45012, that multiplied together give a triangular number (37945116 = T₈₇₁₁).

The spelling of 84345012 in words is "eighty-four million, three hundred forty-five thousand, twelve".