20022071280 has 80 divisors (see below), whose sum is σ = 62121336480. Its totient is φ = 5334667264.

The previous prime is 20022071269. The next prime is 20022071291. The reversal of 20022071280 is 8217022002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20022071269) and next prime (20022071291).

It is a tau number, because it is divible by the number of its divisors (80).

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 20022071280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251356 + ... + 321284.

It is an arithmetic number, because the mean of its divisors is an integer number (776516706).

Almost surely, 2^20022071280 is an apocalyptic number.

20022071280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022071280 is an abundant number, since it is smaller than the sum of its proper divisors (42099265200).

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

20022071280 is a wasteful number, since it uses less digits than its factorization.

20022071280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71138 (or 71132 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

Adding to 20022071280 its reverse (8217022002), we get a palindrome (28239093282).

The spelling of 20022071280 in words is "twenty billion, twenty-two million, seventy-one thousand, two hundred eighty".