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12900393 = 3211130307
BaseRepresentation
bin110001001101…
…100000101001
3220021102000100
4301031200221
511300303033
61140300013
7214436322
oct61154051
926242010
1012900393
117311290
1243a1609
132898a8c
1419db449
1511ec513
hexc4d829

12900393 has 12 divisors (see below), whose sum is σ = 20328048. Its totient is φ = 7818360.

The previous prime is 12900367. The next prime is 12900397. The reversal of 12900393 is 39300921.

It is not a de Polignac number, because 12900393 - 25 = 12900361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12900397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65055 + ... + 65252.

It is an arithmetic number, because the mean of its divisors is an integer number (1694004).

Almost surely, 212900393 is an apocalyptic number.

It is an amenable number.

12900393 is a deficient number, since it is larger than the sum of its proper divisors (7427655).

12900393 is a wasteful number, since it uses less digits than its factorization.

12900393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130324 (or 130321 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 12900393 is about 3591.7117089210. The cubic root of 12900393 is about 234.5313915147.

The spelling of 12900393 in words is "twelve million, nine hundred thousand, three hundred ninety-three".

Divisors: 1 3 9 11 33 99 130307 390921 1172763 1433377 4300131 12900393