20838898 has 16 divisors (see below), whose sum is σ = 31822560. Its totient is φ = 10233216.

The previous prime is 20838871. The next prime is 20838919. The reversal of 20838898 is 89883802.

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, 31293 + ... + 31951.

It is an arithmetic number, because the mean of its divisors is an integer number (1988910).

Almost surely, 2^20838898 is an apocalyptic number.

20838898 is a deficient number, since it is larger than the sum of its proper divisors (10983662).

20838898 is a wasteful number, since it uses less digits than its factorization.

20838898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 20838898 is about 4564.9641838683. The cubic root of 20838898 is about 275.1851007263.

It can be divided in two parts, 20838 and 898, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 20838898 in words is "twenty million, eight hundred thirty-eight thousand, eight hundred ninety-eight".