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12197930 = 251219793
BaseRepresentation
bin101110100010…
…000000101010
3211221201102012
4232202000222
511110313210
61113235522
7205452323
oct56420052
924851365
1012197930
116981538
124102ba2
1326b1114
14189744a
15110e305
hexba202a

12197930 has 8 divisors (see below), whose sum is σ = 21956292. Its totient is φ = 4879168.

The previous prime is 12197921. The next prime is 12197947. The reversal of 12197930 is 3979121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11689561 + 508369 = 3419^2 + 713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609887 + ... + 609906.

Almost surely, 212197930 is an apocalyptic number.

12197930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12197930 is a deficient number, since it is larger than the sum of its proper divisors (9758362).

12197930 is a wasteful number, since it uses less digits than its factorization.

12197930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219800.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 12197930 is about 3492.5535071062. The cubic root of 12197930 is about 230.1947311133.

The spelling of 12197930 in words is "twelve million, one hundred ninety-seven thousand, nine hundred thirty".

Divisors: 1 2 5 10 1219793 2439586 6098965 12197930