2020166440 has 32 divisors (see below), whose sum is σ = 4812751080. Its totient is φ = 760532992.

The previous prime is 2020166437. The next prime is 2020166459. The reversal of 2020166440 is 446610202.

It can be written as a sum of positive squares in 4 ways, for example, as 1641708324 + 378458116 = 40518^2 + 19454^2 .

It is a super-3 number, since 3×2020166440³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484737 + ... + 1486096.

Almost surely, 2^2020166440 is an apocalyptic number.

2020166440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020166440 is an abundant number, since it is smaller than the sum of its proper divisors (2792584640).

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

2020166440 is a wasteful number, since it uses less digits than its factorization.

2020166440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970861 (or 2970857 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 2020166440 is about 44946.2616910461. The cubic root of 2020166440 is about 1264.1415830428.

Adding to 2020166440 its reverse (446610202), we get a palindrome (2466776642).

The spelling of 2020166440 in words is "two billion, twenty million, one hundred sixty-six thousand, four hundred forty".