2090647890 has 96 divisors (see below), whose sum is σ = 5646101760. Its totient is φ = 536332032.

The previous prime is 2090647877. The next prime is 2090647891. The reversal of 2090647890 is 987460902.

It is a happy number.

2090647890 is a `hidden beast` number, since 2 + 0 + 90 + 6 + 478 + 90 = 666.

2090647890 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2090647890² = 8741617199922904200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2090647891) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245382 + ... + 253758.

It is an arithmetic number, because the mean of its divisors is an integer number (58813560).

Almost surely, 2^2090647890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2090647890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2823050880).

2090647890 is an abundant number, since it is smaller than the sum of its proper divisors (3555453870).

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

2090647890 is a wasteful number, since it uses less digits than its factorization.

2090647890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496 (or 8493 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 2090647890 is about 45723.6032044720. The cubic root of 2090647890 is about 1278.6753650795.

The spelling of 2090647890 in words is "two billion, ninety million, six hundred forty-seven thousand, eight hundred ninety".