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12098172 = 2231008181
BaseRepresentation
bin101110001001…
…101001111100
3211202122120110
4232021221330
511044120142
61111150020
7204555432
oct56115174
924678513
1012098172
116913599
124075310
1326778a8
14186cd52
1510de99c
hexb89a7c

12098172 has 12 divisors (see below), whose sum is σ = 28229096. Its totient is φ = 4032720.

The previous prime is 12098171. The next prime is 12098173. The reversal of 12098172 is 27189021.

It is an interprime number because it is at equal distance from previous prime (12098171) and next prime (12098173).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12098171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504079 + ... + 504102.

Almost surely, 212098172 is an apocalyptic number.

12098172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12098172 is an abundant number, since it is smaller than the sum of its proper divisors (16130924).

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

12098172 is a wasteful number, since it uses less digits than its factorization.

12098172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008188 (or 1008186 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12098172 is about 3478.2426597349. The cubic root of 12098172 is about 229.5654808145.

The spelling of 12098172 in words is "twelve million, ninety-eight thousand, one hundred seventy-two".