84734280 has 96 divisors (see below), whose sum is σ = 280645560. Its totient is φ = 22164480.

The previous prime is 84734267. The next prime is 84734303. The reversal of 84734280 is 8243748.

It can be written as a sum of positive squares in 4 ways, for example, as 71470116 + 13264164 = 8454^2 + 3642^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 16860 + ... + 21300.

Almost surely, 2^84734280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84734280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140322780).

84734280 is an abundant number, since it is smaller than the sum of its proper divisors (195911280).

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

84734280 is a wasteful number, since it uses less digits than its factorization.

84734280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4511 (or 4504 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 84734280 is about 9205.1224869634. The cubic root of 84734280 is about 439.2243220627.

The spelling of 84734280 in words is "eighty-four million, seven hundred thirty-four thousand, two hundred eighty".