1872198 has 24 divisors (see below), whose sum is σ = 4144608. Its totient is φ = 610512.

The previous prime is 1872173. The next prime is 1872217. The reversal of 1872198 is 8912781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261 + ... + 1952.

It is an arithmetic number, because the mean of its divisors is an integer number (172692).

2^1872198 is an apocalyptic number.

1872198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1872198 is an abundant number, since it is smaller than the sum of its proper divisors (2272410).

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

1872198 is a wasteful number, since it uses less digits than its factorization.

1872198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268 (or 2265 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 1872198 is about 1368.2828654924. The cubic root of 1872198 is about 123.2491479711.

The spelling of 1872198 in words is "one million, eight hundred seventy-two thousand, one hundred ninety-eight".