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12780098 = 213148779
BaseRepresentation
bin110000110000…
…001001000010
3220001021222222
4300300021002
511232430343
61133531042
7213425522
oct60601102
926037888
1012780098
117239971
124343a82
1328560b6
1419a9682
1511c6a68
hexc30242

12780098 has 8 divisors (see below), whose sum is σ = 19316880. Its totient is φ = 6341140.

The previous prime is 12780017. The next prime is 12780113. The reversal of 12780098 is 89008721.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24128 + ... + 24651.

It is an arithmetic number, because the mean of its divisors is an integer number (2414610).

Almost surely, 212780098 is an apocalyptic number.

12780098 is a deficient number, since it is larger than the sum of its proper divisors (6536782).

12780098 is a wasteful number, since it uses less digits than its factorization.

12780098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48912.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 12780098 is about 3574.9262929465. The cubic root of 12780098 is about 233.8001190823.

The spelling of 12780098 in words is "twelve million, seven hundred eighty thousand, ninety-eight".

Divisors: 1 2 131 262 48779 97558 6390049 12780098