20211198 has 32 divisors (see below), whose sum is σ = 48916224. Its totient is φ = 5434752.

The previous prime is 20211197. The next prime is 20211203. The reversal of 20211198 is 89111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13440 + ... + 14867.

It is an arithmetic number, because the mean of its divisors is an integer number (1528632).

Almost surely, 2^20211198 is an apocalyptic number.

20211198 is an abundant number, since it is smaller than the sum of its proper divisors (28705026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20211198 is a wasteful number, since it uses less digits than its factorization.

20211198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28336.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 20211198 is about 4495.6865993972. The cubic root of 20211198 is about 272.3938839970.

The spelling of 20211198 in words is "twenty million, two hundred eleven thousand, one hundred ninety-eight".