84000880 has 20 divisors (see below), whose sum is σ = 195302232. Its totient is φ = 33600320.

The previous prime is 84000869. The next prime is 84000911. The reversal of 84000880 is 8800048.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×84000880² = 14112295681548800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524926 + ... + 525085.

Almost surely, 2^84000880 is an apocalyptic number.

84000880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84000880 is an abundant number, since it is smaller than the sum of its proper divisors (111301352).

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

84000880 is a wasteful number, since it uses less digits than its factorization.

84000880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050024 (or 1050018 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 84000880 is about 9165.1993977218. The cubic root of 84000880 is about 437.9534433393.

The spelling of 84000880 in words is "eighty-four million, eight hundred eighty", and thus it is an aban number.