2113388928 has 128 divisors (see below), whose sum is σ = 7128576000. Its totient is φ = 603818496.

The previous prime is 2113388861. The next prime is 2113388929. The reversal of 2113388928 is 8298833112.

It is a happy number.

2113388928 is a `hidden beast` number, since 211 + 338 + 89 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113388929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19488 + ... + 67871.

It is an arithmetic number, because the mean of its divisors is an integer number (55692000).

Almost surely, 2^2113388928 is an apocalyptic number.

2113388928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2113388928 is an abundant number, since it is smaller than the sum of its proper divisors (5015187072).

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

2113388928 is an equidigital number, since it uses as much as digits as its factorization.

2113388928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87389 (or 87371 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 2113388928 is about 45971.6100218385. The cubic root of 2113388928 is about 1283.2949225287.

The spelling of 2113388928 in words is "two billion, one hundred thirteen million, three hundred eighty-eight thousand, nine hundred twenty-eight".