2069890728 has 16 divisors (see below), whose sum is σ = 5174726880. Its totient is φ = 689963568.

The previous prime is 2069890651. The next prime is 2069890729. The reversal of 2069890728 is 8270989602.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2069890729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43122700 + ... + 43122747.

It is an arithmetic number, because the mean of its divisors is an integer number (323420430).

Almost surely, 2^2069890728 is an apocalyptic number.

It is an amenable number.

2069890728 is an abundant number, since it is smaller than the sum of its proper divisors (3104836152).

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

2069890728 is a wasteful number, since it uses less digits than its factorization.

2069890728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86245456 (or 86245452 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 2069890728 is about 45496.0517847428. The cubic root of 2069890728 is about 1274.4294723858.

The spelling of 2069890728 in words is "two billion, sixty-nine million, eight hundred ninety thousand, seven hundred twenty-eight".