20298638 has 8 divisors (see below), whose sum is σ = 30479232. Its totient is φ = 10138896.

The previous prime is 20298613. The next prime is 20298643. The reversal of 20298638 is 83689202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2495 + ... + 6842.

It is an arithmetic number, because the mean of its divisors is an integer number (3809904).

Almost surely, 2^20298638 is an apocalyptic number.

20298638 is a deficient number, since it is larger than the sum of its proper divisors (10180594).

20298638 is a wasteful number, since it uses less digits than its factorization.

20298638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10426.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 20298638 is about 4505.4009810449. The cubic root of 20298638 is about 272.7861394075.

The spelling of 20298638 in words is "twenty million, two hundred ninety-eight thousand, six hundred thirty-eight".