84530812 has 12 divisors (see below), whose sum is σ = 148150296. Its totient is φ = 42202160.

The previous prime is 84530777. The next prime is 84530821. The reversal of 84530812 is 21803548.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12739 + ... + 18202.

It is an arithmetic number, because the mean of its divisors is an integer number (12345858).

Almost surely, 2^84530812 is an apocalyptic number.

It is an amenable number.

84530812 is a deficient number, since it is larger than the sum of its proper divisors (63619484).

84530812 is a wasteful number, since it uses less digits than its factorization.

84530812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31628 (or 31626 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 84530812 is about 9194.0639545307. The cubic root of 84530812 is about 438.8724781511.

The spelling of 84530812 in words is "eighty-four million, five hundred thirty thousand, eight hundred twelve".