20283446780 has 12 divisors (see below), whose sum is σ = 42595238280. Its totient is φ = 8113378704.

The previous prime is 20283446767. The next prime is 20283446801. The reversal of 20283446780 is 8764438202.

It is a happy number.

It is a super-2 number, since 2×20283446780² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507086150 + ... + 507086189.

It is an arithmetic number, because the mean of its divisors is an integer number (3549603190).

Almost surely, 2^20283446780 is an apocalyptic number.

20283446780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20283446780 is an abundant number, since it is smaller than the sum of its proper divisors (22311791500).

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

20283446780 is a wasteful number, since it uses less digits than its factorization.

20283446780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014172348 (or 1014172346 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The spelling of 20283446780 in words is "twenty billion, two hundred eighty-three million, four hundred forty-six thousand, seven hundred eighty".