20838398 has 16 divisors (see below), whose sum is σ = 35856864. Its totient is φ = 8897280.

The previous prime is 20838329. The next prime is 20838401. The reversal of 20838398 is 89383802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1286 + ... + 6582.

It is an arithmetic number, because the mean of its divisors is an integer number (2241054).

Almost surely, 2^20838398 is an apocalyptic number.

20838398 is a deficient number, since it is larger than the sum of its proper divisors (15018466).

20838398 is a wasteful number, since it uses less digits than its factorization.

20838398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 20838398 is about 4564.9094185975. The cubic root of 20838398 is about 275.1828998158.

The spelling of 20838398 in words is "twenty million, eight hundred thirty-eight thousand, three hundred ninety-eight".