2112878320 has 80 divisors (see below), whose sum is σ = 5944494528. Its totient is φ = 681799680.

The previous prime is 2112878309. The next prime is 2112878333. The reversal of 2112878320 is 238782112.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101451 + ... + 120490.

Almost surely, 2^2112878320 is an apocalyptic number.

2112878320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112878320 is an abundant number, since it is smaller than the sum of its proper divisors (3831616208).

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

2112878320 is a wasteful number, since it uses less digits than its factorization.

2112878320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221978 (or 221972 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 2112878320 is about 45966.0561719189. The cubic root of 2112878320 is about 1283.1915635076.

The spelling of 2112878320 in words is "two billion, one hundred twelve million, eight hundred seventy-eight thousand, three hundred twenty".