20442202040 has 64 divisors (see below), whose sum is σ = 50023582560. Its totient is φ = 7473139200.

The previous prime is 20442201991. The next prime is 20442202057. The reversal of 20442202040 is 4020224402.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142094 + ... + 247133.

Almost surely, 2^20442202040 is an apocalyptic number.

20442202040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20442202040 is an abundant number, since it is smaller than the sum of its proper divisors (29581380520).

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

20442202040 is a wasteful number, since it uses less digits than its factorization.

20442202040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389352 (or 389348 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20442202040 its reverse (4020224402), we get a palindrome (24462426442).

The spelling of 20442202040 in words is "twenty billion, four hundred forty-two million, two hundred two thousand, forty".