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12990367 = 1337113239
BaseRepresentation
bin110001100011…
…011110011111
3220102222102201
4301203132133
511311142432
61142232331
7215262535
oct61433637
926388381
1012990367
117372945
1244256a7
1328caa10
141a22155
151218ee7
hexc6379f

12990367 has 16 divisors (see below), whose sum is σ = 14555520. Its totient is φ = 11515392.

The previous prime is 12990361. The next prime is 12990371. The reversal of 12990367 is 76309921.

It is a cyclic number.

It is not a de Polignac number, because 12990367 - 219 = 12466079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12990361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54234 + ... + 54472.

It is an arithmetic number, because the mean of its divisors is an integer number (909720).

Almost surely, 212990367 is an apocalyptic number.

12990367 is a deficient number, since it is larger than the sum of its proper divisors (1565153).

12990367 is a wasteful number, since it uses less digits than its factorization.

12990367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 12990367 is about 3604.2151711572. The cubic root of 12990367 is about 235.0753764541.

The spelling of 12990367 in words is "twelve million, nine hundred ninety thousand, three hundred sixty-seven".

Divisors: 1 13 37 113 239 481 1469 3107 4181 8843 27007 54353 114959 351091 999259 12990367