84428000 has 48 divisors (see below), whose sum is σ = 207449424. Its totient is φ = 33769600.

The previous prime is 84427999. The next prime is 84428051. The reversal of 84428000 is 82448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6554 + ... + 14553.

It is an arithmetic number, because the mean of its divisors is an integer number (4321863).

Almost surely, 2^84428000 is an apocalyptic number.

84428000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84428000 is an abundant number, since it is smaller than the sum of its proper divisors (123021424).

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

84428000 is a wasteful number, since it uses less digits than its factorization.

84428000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21132 (or 21114 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 84428000 is about 9188.4710371204. The cubic root of 84428000 is about 438.6944773262.

The spelling of 84428000 in words is "eighty-four million, four hundred twenty-eight thousand".