20398876 has 12 divisors (see below), whose sum is σ = 35737072. Its totient is φ = 10188288.

The previous prime is 20398871. The next prime is 20398891. The reversal of 20398876 is 67889302.

It is a super-2 number, since 2×20398876² = 832228284126752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20398871) 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, 2401 + ... + 6823.

Almost surely, 2^20398876 is an apocalyptic number.

It is an amenable number.

20398876 is a deficient number, since it is larger than the sum of its proper divisors (15338196).

20398876 is a wasteful number, since it uses less digits than its factorization.

20398876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580 (or 5578 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 20398876 is about 4516.5114856491. The cubic root of 20398876 is about 273.2344231981.

The spelling of 20398876 in words is "twenty million, three hundred ninety-eight thousand, eight hundred seventy-six".