20898633930 has 64 divisors (see below), whose sum is σ = 50953674240. Its totient is φ = 5484870144.

The previous prime is 20898633923. The next prime is 20898633991. The reversal of 20898633930 is 3933689802.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 737382 + ... + 765198.

It is an arithmetic number, because the mean of its divisors is an integer number (796151160).

Almost surely, 2^20898633930 is an apocalyptic number.

20898633930 is an abundant number, since it is smaller than the sum of its proper divisors (30055040310).

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

20898633930 is a wasteful number, since it uses less digits than its factorization.

20898633930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28223.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The spelling of 20898633930 in words is "twenty billion, eight hundred ninety-eight million, six hundred thirty-three thousand, nine hundred thirty".