2056440400 has 60 divisors (see below), whose sum is σ = 5646405472. Its totient is φ = 705064320.

The previous prime is 2056440391. The next prime is 2056440401. The reversal of 2056440400 is 40446502.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056440401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364422 + ... + 370021.

Almost surely, 2^2056440400 is an apocalyptic number.

2056440400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2056440400 is an abundant number, since it is smaller than the sum of its proper divisors (3589965072).

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

2056440400 is a wasteful number, since it uses less digits than its factorization.

2056440400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734468 (or 734457 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2056440400 is about 45347.9922378048. The cubic root of 2056440400 is about 1271.6630207122.

Adding to 2056440400 its reverse (40446502), we get a palindrome (2096886902).

The spelling of 2056440400 in words is "two billion, fifty-six million, four hundred forty thousand, four hundred".