2000402440 has 16 divisors (see below), whose sum is σ = 4500905580. Its totient is φ = 800160960.

The previous prime is 2000402431. The next prime is 2000402471. The reversal of 2000402440 is 442040002.

It can be written as a sum of positive squares in 2 ways, for example, as 1602080676 + 398321764 = 40026^2 + 19958^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25004991 + ... + 25005070.

Almost surely, 2^2000402440 is an apocalyptic number.

2000402440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000402440 is an abundant number, since it is smaller than the sum of its proper divisors (2500503140).

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

2000402440 is a wasteful number, since it uses less digits than its factorization.

2000402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50010072 (or 50010068 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 2000402440 is about 44725.8587396598. The cubic root of 2000402440 is about 1260.0055513319.

Adding to 2000402440 its reverse (442040002), we get a palindrome (2442442442).

The spelling of 2000402440 in words is "two billion, four hundred two thousand, four hundred forty".