20198854 has 8 divisors (see below), whose sum is σ = 32628960. Its totient is φ = 9322536.

The previous prime is 20198837. The next prime is 20198903. The reversal of 20198854 is 45889102.

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

It is a super-3 number, since 3×20198854³ (a number of 23 digits) contains 333 as substring.

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, 388414 + ... + 388465.

It is an arithmetic number, because the mean of its divisors is an integer number (4078620).

Almost surely, 2^20198854 is an apocalyptic number.

20198854 is a deficient number, since it is larger than the sum of its proper divisors (12430106).

20198854 is a wasteful number, since it uses less digits than its factorization.

20198854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776894.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 20198854 is about 4494.3135182139. The cubic root of 20198854 is about 272.3384177999.

The spelling of 20198854 in words is "twenty million, one hundred ninety-eight thousand, eight hundred fifty-four".