84216270 has 16 divisors (see below), whose sum is σ = 202119120. Its totient is φ = 22457664.

The previous prime is 84216259. The next prime is 84216277. The reversal of 84216270 is 7261248.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2807209 = 84216270 / (8 + 4 + 2 + 1 + 6 + 2 + 7 + 0).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84216277) 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 7 ways as a sum of consecutive naturals, for example, 1403575 + ... + 1403634.

It is an arithmetic number, because the mean of its divisors is an integer number (12632445).

Almost surely, 2^84216270 is an apocalyptic number.

84216270 is an abundant number, since it is smaller than the sum of its proper divisors (117902850).

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

84216270 is a wasteful number, since it uses less digits than its factorization.

84216270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807219.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 84216270 is about 9176.9423012243. The cubic root of 84216270 is about 438.3274484729.

The spelling of 84216270 in words is "eighty-four million, two hundred sixteen thousand, two hundred seventy".