20022004240 has 40 divisors (see below), whose sum is σ = 53201327040. Its totient is φ = 6864686976.

The previous prime is 20022004199. The next prime is 20022004241. The reversal of 20022004240 is 4240022002.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20022004241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17876230 + ... + 17877349.

It is an arithmetic number, because the mean of its divisors is an integer number (1330033176).

Almost surely, 2^20022004240 is an apocalyptic number.

20022004240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022004240 is an abundant number, since it is smaller than the sum of its proper divisors (33179322800).

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

20022004240 is a wasteful number, since it uses less digits than its factorization.

20022004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35753599 (or 35753593 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20022004240 its reverse (4240022002), we get a palindrome (24262026242).

The spelling of 20022004240 in words is "twenty billion, twenty-two million, four thousand, two hundred forty".