1440400200 has 48 divisors (see below), whose sum is σ = 4465242480. Its totient is φ = 384106560.

The previous prime is 1440400183. The next prime is 1440400219. The reversal of 1440400200 is 20040441.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1440400200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1199734 + ... + 1200933.

It is an arithmetic number, because the mean of its divisors is an integer number (93025885).

Almost surely, 2^1440400200 is an apocalyptic number.

1440400200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440400200 is an abundant number, since it is smaller than the sum of its proper divisors (3024842280).

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

1440400200 is a wasteful number, since it uses less digits than its factorization.

1440400200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400686 (or 2400677 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1440400200 is about 37952.6046536993. The cubic root of 1440400200 is about 1129.3478368061.

Adding to 1440400200 its reverse (20040441), we get a palindrome (1460440641).

The spelling of 1440400200 in words is "one billion, four hundred forty million, four hundred thousand, two hundred".