2040400244 has 12 divisors (see below), whose sum is σ = 3571466724. Its totient is φ = 1019981184.

The previous prime is 2040400217. The next prime is 2040400247. The reversal of 2040400244 is 4420040402.

It can be written as a sum of positive squares in 2 ways, for example, as 757900900 + 1282499344 = 27530^2 + 35812^2 .

It is a super-3 number, since 3×2040400244³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040400247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32789 + ... + 71804.

It is an arithmetic number, because the mean of its divisors is an integer number (297622227).

Almost surely, 2^2040400244 is an apocalyptic number.

It is an amenable number.

2040400244 is a deficient number, since it is larger than the sum of its proper divisors (1531066480).

2040400244 is a wasteful number, since it uses less digits than its factorization.

2040400244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109474 (or 109472 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 2040400244 is about 45170.7897207919. The cubic root of 2040400244 is about 1268.3480793644.

Adding to 2040400244 its reverse (4420040402), we get a palindrome (6460440646).

The spelling of 2040400244 in words is "two billion, forty million, four hundred thousand, two hundred forty-four".