20014402440 has 128 divisors (see below), whose sum is σ = 61544448000. Its totient is φ = 5205166848.

The previous prime is 20014402423. The next prime is 20014402469. The reversal of 20014402440 is 4420441002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 888031 + ... + 910289.

It is an arithmetic number, because the mean of its divisors is an integer number (480816000).

Almost surely, 2^20014402440 is an apocalyptic number.

20014402440 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 20014402440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30772224000).

20014402440 is an abundant number, since it is smaller than the sum of its proper divisors (41530045560).

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

20014402440 is a wasteful number, since it uses less digits than its factorization.

20014402440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22459 (or 22455 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 20014402440 its reverse (4420441002), we get a palindrome (24434843442).

The spelling of 20014402440 in words is "twenty billion, fourteen million, four hundred two thousand, four hundred forty".