2190544328 has 32 divisors (see below), whose sum is σ = 4697127360. Its totient is φ = 938184000.

The previous prime is 2190544309. The next prime is 2190544331. The reversal of 2190544328 is 8234450912.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2190544291 and 2190544300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78203 + ... + 102453.

It is an arithmetic number, because the mean of its divisors is an integer number (146785230).

Almost surely, 2^2190544328 is an apocalyptic number.

2190544328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2190544328 is an abundant number, since it is smaller than the sum of its proper divisors (2506583032).

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

2190544328 is a wasteful number, since it uses less digits than its factorization.

2190544328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25877 (or 25873 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 2190544328 is about 46803.2512545870. The cubic root of 2190544328 is about 1298.7254427091.

The spelling of 2190544328 in words is "two billion, one hundred ninety million, five hundred forty-four thousand, three hundred twenty-eight".