20229449580 has 72 divisors (see below), whose sum is σ = 61970270544. Its totient is φ = 5341104000.

The previous prime is 20229449579. The next prime is 20229449609. The reversal of 20229449580 is 8594492202.

20229449580 is a `hidden beast` number, since 2 + 0 + 2 + 29 + 4 + 49 + 580 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 538186 + ... + 574545.

It is an arithmetic number, because the mean of its divisors is an integer number (860698202).

Almost surely, 2^20229449580 is an apocalyptic number.

20229449580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20229449580 is an abundant number, since it is smaller than the sum of its proper divisors (41740820964).

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

20229449580 is a wasteful number, since it uses less digits than its factorization.

20229449580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112847 (or 1112842 counting only the distinct ones).

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

The spelling of 20229449580 in words is "twenty billion, two hundred twenty-nine million, four hundred forty-nine thousand, five hundred eighty".