20488927830 has 64 divisors (see below), whose sum is σ = 56339988480. Its totient is φ = 4671368064.

The previous prime is 20488927801. The next prime is 20488927841. The reversal of 20488927830 is 3872988402.

It is a Curzon number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 39510 + ... + 206249.

It is an arithmetic number, because the mean of its divisors is an integer number (880312320).

Almost surely, 2^20488927830 is an apocalyptic number.

20488927830 is an abundant number, since it is smaller than the sum of its proper divisors (35851060650).

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

20488927830 is a wasteful number, since it uses less digits than its factorization.

20488927830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246173.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 20488927830 in words is "twenty billion, four hundred eighty-eight million, nine hundred twenty-seven thousand, eight hundred thirty".