20198235936 has 48 divisors (see below), whose sum is σ = 53811735264. Its totient is φ = 6632254464.

The previous prime is 20198235901. The next prime is 20198235949. The reversal of 20198235936 is 63953289102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 1563705 + ... + 1576568.

It is an arithmetic number, because the mean of its divisors is an integer number (1121077818).

Almost surely, 2^20198235936 is an apocalyptic number.

It is an amenable number.

20198235936 is an abundant number, since it is smaller than the sum of its proper divisors (33613499328).

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

20198235936 is a wasteful number, since it uses less digits than its factorization.

20198235936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140353 (or 3140345 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 48.

The spelling of 20198235936 in words is "twenty billion, one hundred ninety-eight million, two hundred thirty-five thousand, nine hundred thirty-six".