20683590228 has 288 divisors, whose sum is σ = 65277255680. Its totient is φ = 5388768000.

The previous prime is 20683590227. The next prime is 20683590229. The reversal of 20683590228 is 82209538602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20683590227) and next prime (20683590229).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20683590227) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 49129458 + ... + 49129878.

Almost surely, 2^20683590228 is an apocalyptic number.

20683590228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20683590228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32638627840).

20683590228 is an abundant number, since it is smaller than the sum of its proper divisors (44593665452).

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

20683590228 is a wasteful number, since it uses less digits than its factorization.

20683590228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 20683590228 in words is "twenty billion, six hundred eighty-three million, five hundred ninety thousand, two hundred twenty-eight".