84000030 has 16 divisors (see below), whose sum is σ = 201600144. Its totient is φ = 22400000.

The previous prime is 84000023. The next prime is 84000041. The reversal of 84000030 is 3000048.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83999973 and 84000009.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1399971 + ... + 1400030.

It is an arithmetic number, because the mean of its divisors is an integer number (12600009).

Almost surely, 2^84000030 is an apocalyptic number.

84000030 is an abundant number, since it is smaller than the sum of its proper divisors (117600114).

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

84000030 is a wasteful number, since it uses less digits than its factorization.

84000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800011.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 84000030 is about 9165.1530265457. The cubic root of 84000030 is about 437.9519661259.

Adding to 84000030 its reverse (3000048), we get a palindrome (87000078).

The spelling of 84000030 in words is "eighty-four million, thirty", and thus it is an aban number.