20022035640 has 32 divisors (see below), whose sum is σ = 60066107280. Its totient is φ = 5339209472.

The previous prime is 20022035629. The next prime is 20022035681. The reversal of 20022035640 is 4653022002.

It is a super-2 number, since 2×20022035640² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20022035640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83425029 + ... + 83425268.

Almost surely, 2^20022035640 is an apocalyptic number.

20022035640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022035640 is an abundant number, since it is smaller than the sum of its proper divisors (40044071640).

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

20022035640 is a wasteful number, since it uses less digits than its factorization.

20022035640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166850311 (or 166850307 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20022035640 its reverse (4653022002), we get a palindrome (24675057642).

The spelling of 20022035640 in words is "twenty billion, twenty-two million, thirty-five thousand, six hundred forty".