18102196 has 24 divisors (see below), whose sum is σ = 37779840. Its totient is φ = 7420512.

The previous prime is 18102187. The next prime is 18102211. The reversal of 18102196 is 69120181.

It is a happy number.

It is a super-3 number, since 3×18102196³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13411 + ... + 14698.

It is an arithmetic number, because the mean of its divisors is an integer number (1574160).

Almost surely, 2^18102196 is an apocalyptic number.

It is an amenable number.

18102196 is an abundant number, since it is smaller than the sum of its proper divisors (19677644).

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

18102196 is a wasteful number, since it uses less digits than its factorization.

18102196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28143 (or 28141 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 18102196 is about 4254.6675545805. The cubic root of 18102196 is about 262.5691838809.

The spelling of 18102196 in words is "eighteen million, one hundred two thousand, one hundred ninety-six".