2020840690 has 16 divisors (see below), whose sum is σ = 3968196480. Its totient is φ = 734851120.

The previous prime is 2020840687. The next prime is 2020840693. The reversal of 2020840690 is 960480202.

It is an interprime number because it is at equal distance from previous prime (2020840687) and next prime (2020840693).

It is a super-2 number, since 2×2020840690² = 8167594188719352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2020840693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9185530 + ... + 9185749.

It is an arithmetic number, because the mean of its divisors is an integer number (248012280).

Almost surely, 2^2020840690 is an apocalyptic number.

2020840690 is a deficient number, since it is larger than the sum of its proper divisors (1947355790).

2020840690 is a wasteful number, since it uses less digits than its factorization.

2020840690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18371297.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2020840690 is about 44953.7616890956. The cubic root of 2020840690 is about 1264.2822072074.

The spelling of 2020840690 in words is "two billion, twenty million, eight hundred forty thousand, six hundred ninety".