20858734332 has 48 divisors (see below), whose sum is σ = 54086027520. Its totient is φ = 6951905136.

The previous prime is 20858734319. The next prime is 20858734333. The reversal of 20858734332 is 23343785802.

20858734332 is a `hidden beast` number, since 2 + 0 + 8 + 587 + 34 + 3 + 32 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20858734333) 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, 1340863 + ... + 1356329.

It is an arithmetic number, because the mean of its divisors is an integer number (1126792240).

Almost surely, 2^20858734332 is an apocalyptic number.

It is an amenable number.

20858734332 is an abundant number, since it is smaller than the sum of its proper divisors (33227293188).

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

20858734332 is a wasteful number, since it uses less digits than its factorization.

20858734332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27967 (or 27959 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 20858734332 in words is "twenty billion, eight hundred fifty-eight million, seven hundred thirty-four thousand, three hundred thirty-two".