2020400144 has 30 divisors (see below), whose sum is σ = 4553633214. Its totient is φ = 865885440.

The previous prime is 2020400143. The next prime is 2020400147. The reversal of 2020400144 is 4410040202.

It can be written as a sum of positive squares in only one way, i.e., 2017087744 + 3312400 = 44912^2 + 1820^2 .

It is not an unprimeable number, because it can be changed into a prime (2020400141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1287737 + ... + 1289304.

Almost surely, 2^2020400144 is an apocalyptic number.

It is an amenable number.

2020400144 is an abundant number, since it is smaller than the sum of its proper divisors (2533233070).

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

2020400144 is a wasteful number, since it uses less digits than its factorization.

2020400144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2577063 (or 2577050 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 2020400144 is about 44948.8614316314. The cubic root of 2020400144 is about 1264.1903287876.

Adding to 2020400144 its reverse (4410040202), we get a palindrome (6430440346).

The spelling of 2020400144 in words is "two billion, twenty million, four hundred thousand, one hundred forty-four".