2091333728 has 24 divisors (see below), whose sum is σ = 4491615240. Its totient is φ = 950606080.

The previous prime is 2091333701. The next prime is 2091333763. The reversal of 2091333728 is 8273331902.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2091333691 and 2091333700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970293 + ... + 2970996.

It is an arithmetic number, because the mean of its divisors is an integer number (187150635).

Almost surely, 2^2091333728 is an apocalyptic number.

It is an amenable number.

2091333728 is an abundant number, since it is smaller than the sum of its proper divisors (2400281512).

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

2091333728 is a wasteful number, since it uses less digits than its factorization.

2091333728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941310 (or 5941302 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 2091333728 is about 45731.1024140027. The cubic root of 2091333728 is about 1278.8151731394.

The spelling of 2091333728 in words is "two billion, ninety-one million, three hundred thirty-three thousand, seven hundred twenty-eight".