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13918307 = 135411979
BaseRepresentation
bin110101000110…
…000001100011
3222012010022212
4311012001203
512030341212
61214152335
7226206104
oct65060143
928163285
1013918307
117947037
1247b26ab
132b641b0
141bc43ab
15134de22
hexd46063

13918307 has 8 divisors (see below), whose sum is σ = 15024240. Its totient is φ = 12817440.

The previous prime is 13918301. The next prime is 13918337. The reversal of 13918307 is 70381931.

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

It is a cyclic number.

It is not a de Polignac number, because 13918307 - 210 = 13917283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13918301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6044 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (1878030).

Almost surely, 213918307 is an apocalyptic number.

13918307 is a deficient number, since it is larger than the sum of its proper divisors (1105933).

13918307 is a wasteful number, since it uses less digits than its factorization.

13918307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 13918307 is about 3730.7247285213. The cubic root of 13918307 is about 240.5445217345.

The spelling of 13918307 in words is "thirteen million, nine hundred eighteen thousand, three hundred seven".

Divisors: 1 13 541 1979 7033 25727 1070639 13918307