20434446228 has 48 divisors (see below), whose sum is σ = 54688640384. Its totient is φ = 5817329280.

The previous prime is 20434446203. The next prime is 20434446229. The reversal of 20434446228 is 82264443402.

It is a super-3 number, since 3×20434446228³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434446229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415843 + ... + 462378.

Almost surely, 2^20434446228 is an apocalyptic number.

20434446228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20434446228 is an abundant number, since it is smaller than the sum of its proper divisors (34254194156).

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

20434446228 is a wasteful number, since it uses less digits than its factorization.

20434446228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878512 (or 878510 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 39.

The spelling of 20434446228 in words is "twenty billion, four hundred thirty-four million, four hundred forty-six thousand, two hundred twenty-eight".