20852198 has 4 divisors (see below), whose sum is σ = 31278300. Its totient is φ = 10426098.

The previous prime is 20852197. The next prime is 20852207. The reversal of 20852198 is 89125802.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20852198² = 869628322862408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20852197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5213048 + ... + 5213051.

It is an arithmetic number, because the mean of its divisors is an integer number (7819575).

Almost surely, 2^20852198 is an apocalyptic number.

20852198 is a deficient number, since it is larger than the sum of its proper divisors (10426102).

20852198 is a wasteful number, since it uses less digits than its factorization.

20852198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10426101.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 20852198 is about 4566.4206989720. The cubic root of 20852198 is about 275.2436320281.

The spelling of 20852198 in words is "twenty million, eight hundred fifty-two thousand, one hundred ninety-eight".