84210800 has 30 divisors (see below), whose sum is σ = 202317408. Its totient is φ = 33684160.

The previous prime is 84210781. The next prime is 84210803. The reversal of 84210800 is 801248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84210803) 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 5 ways as a sum of consecutive naturals, for example, 104864 + ... + 105663.

Almost surely, 2^84210800 is an apocalyptic number.

84210800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84210800 is an abundant number, since it is smaller than the sum of its proper divisors (118106608).

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

84210800 is a wasteful number, since it uses less digits than its factorization.

84210800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210545 (or 210534 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 84210800 is about 9176.6442668331. The cubic root of 84210800 is about 438.3179582123.

The spelling of 84210800 in words is "eighty-four million, two hundred ten thousand, eight hundred".