84055880 has 64 divisors (see below), whose sum is σ = 199065600. Its totient is φ = 31898880.

The previous prime is 84055877. The next prime is 84055889. The reversal of 84055880 is 8855048.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (84055889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65081 + ... + 66359.

It is an arithmetic number, because the mean of its divisors is an integer number (3110400).

Almost surely, 2^84055880 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 84055880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99532800).

84055880 is an abundant number, since it is smaller than the sum of its proper divisors (115009720).

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

84055880 is a wasteful number, since it uses less digits than its factorization.

84055880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374 (or 1370 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 84055880 is about 9168.1993870116. The cubic root of 84055880 is about 438.0490065611.

The spelling of 84055880 in words is "eighty-four million, fifty-five thousand, eight hundred eighty".