20284474452 has 48 divisors (see below), whose sum is σ = 52833994752. Its totient is φ = 6003859680.

The previous prime is 20284474411. The next prime is 20284474489. The reversal of 20284474452 is 25447448202.

It is a super-2 number, since 2×20284474452² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1781188 + ... + 1792539.

It is an arithmetic number, because the mean of its divisors is an integer number (1100708224).

Almost surely, 2^20284474452 is an apocalyptic number.

20284474452 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20284474452 is an abundant number, since it is smaller than the sum of its proper divisors (32549520300).

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

20284474452 is a wasteful number, since it uses less digits than its factorization.

20284474452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3573788 (or 3573786 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 42.

The spelling of 20284474452 in words is "twenty billion, two hundred eighty-four million, four hundred seventy-four thousand, four hundred fifty-two".