20028341484 has 72 divisors (see below), whose sum is σ = 53394635840. Its totient is φ = 6312533472.

The previous prime is 20028341479. The next prime is 20028341513. The reversal of 20028341484 is 48414382002.

It is a super-2 number, since 2×20028341484² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 23 ways as a sum of consecutive naturals, for example, 329739 + ... + 385725.

Almost surely, 2^20028341484 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20028341484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26697317920).

20028341484 is an abundant number, since it is smaller than the sum of its proper divisors (33366294356).

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

20028341484 is a wasteful number, since it uses less digits than its factorization.

20028341484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56539 (or 56534 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The spelling of 20028341484 in words is "twenty billion, twenty-eight million, three hundred forty-one thousand, four hundred eighty-four".