2113428128 has 48 divisors (see below), whose sum is σ = 4919201280. Its totient is φ = 874519296.

The previous prime is 2113428127. The next prime is 2113428133. The reversal of 2113428128 is 8218243112.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 2113428094 and 2113428103.

It is not an unprimeable number, because it can be changed into a prime (2113428127) 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 7 ways as a sum of consecutive naturals, for example, 156176 + ... + 169167.

It is an arithmetic number, because the mean of its divisors is an integer number (102483360).

Almost surely, 2^2113428128 is an apocalyptic number.

2113428128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2113428128 is an abundant number, since it is smaller than the sum of its proper divisors (2805773152).

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

2113428128 is a wasteful number, since it uses less digits than its factorization.

2113428128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325389 (or 325381 counting only the distinct ones).

The product of its digits is 6144, while the sum is 32.

The square root of 2113428128 is about 45972.0363699499. The cubic root of 2113428128 is about 1283.3028568389.

The spelling of 2113428128 in words is "two billion, one hundred thirteen million, four hundred twenty-eight thousand, one hundred twenty-eight".