2128434402 has 32 divisors (see below), whose sum is σ = 4298803200. Its totient is φ = 702511488.

The previous prime is 2128434349. The next prime is 2128434419. The reversal of 2128434402 is 2044348212.

It is a self number, because there is not a number n which added to its sum of digits gives 2128434402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431124 + ... + 436032.

It is an arithmetic number, because the mean of its divisors is an integer number (134337600).

Almost surely, 2^2128434402 is an apocalyptic number.

2128434402 is an abundant number, since it is smaller than the sum of its proper divisors (2170368798).

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

2128434402 is a wasteful number, since it uses less digits than its factorization.

2128434402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5610.

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 2128434402 is about 46134.9585672297. The cubic root of 2128434402 is about 1286.3330354454. Note that the first 3 decimals are identical.

The spelling of 2128434402 in words is "two billion, one hundred twenty-eight million, four hundred thirty-four thousand, four hundred two".