84871290 has 128 divisors (see below), whose sum is σ = 248832000. Its totient is φ = 18095616.

The previous prime is 84871289. The next prime is 84871349. The reversal of 84871290 is 9217848.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 354991 + ... + 355229.

It is an arithmetic number, because the mean of its divisors is an integer number (1944000).

Almost surely, 2^84871290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84871290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124416000).

84871290 is an abundant number, since it is smaller than the sum of its proper divisors (163960710).

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

84871290 is a wasteful number, since it uses less digits than its factorization.

84871290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 84871290 is about 9212.5615330374. The cubic root of 84871290 is about 439.4609272821.

The spelling of 84871290 in words is "eighty-four million, eight hundred seventy-one thousand, two hundred ninety".