84847840 has 192 divisors, whose sum is σ = 256048128. Its totient is φ = 25804800.

The previous prime is 84847813. The next prime is 84847871. The reversal of 84847840 is 4874848.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 874672 + ... + 874768.

It is an arithmetic number, because the mean of its divisors is an integer number (1333584).

Almost surely, 2^84847840 is an apocalyptic number.

84847840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84847840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128024064).

84847840 is an abundant number, since it is smaller than the sum of its proper divisors (171200288).

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

84847840 is a wasteful number, since it uses less digits than its factorization.

84847840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 43.

The square root of 84847840 is about 9211.2887263401. The cubic root of 84847840 is about 439.4204490944.

The spelling of 84847840 in words is "eighty-four million, eight hundred forty-seven thousand, eight hundred forty".