20398829804 has 12 divisors (see below), whose sum is σ = 35760694200. Its totient is φ = 10181488608.

The previous prime is 20398829749. The next prime is 20398829807. The reversal of 20398829804 is 40892889302.

It is a super-2 number, since 2×20398829804² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20398829807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4479014 + ... + 4483565.

It is an arithmetic number, because the mean of its divisors is an integer number (2980057850).

Almost surely, 2^20398829804 is an apocalyptic number.

It is an amenable number.

20398829804 is a deficient number, since it is larger than the sum of its proper divisors (15361864396).

20398829804 is a wasteful number, since it uses less digits than its factorization.

20398829804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963152 (or 8963150 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 20398829804 in words is "twenty billion, three hundred ninety-eight million, eight hundred twenty-nine thousand, eight hundred four".