20140144400 has 120 divisors (see below), whose sum is σ = 50997271680. Its totient is φ = 7622484480.

The previous prime is 20140144363. The next prime is 20140144411. The reversal of 20140144400 is 444104102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10084202 + ... + 10086198.

It is an arithmetic number, because the mean of its divisors is an integer number (424977264).

Almost surely, 2^20140144400 is an apocalyptic number.

20140144400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20140144400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25498635840).

20140144400 is an abundant number, since it is smaller than the sum of its proper divisors (30857127280).

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

20140144400 is a wasteful number, since it uses less digits than its factorization.

20140144400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361 (or 3350 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 20140144400 its reverse (444104102), we get a palindrome (20584248502).

The spelling of 20140144400 in words is "twenty billion, one hundred forty million, one hundred forty-four thousand, four hundred".