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12918894 = 232153149
BaseRepresentation
bin110001010010…
…000001101110
3220022100101120
4301102001232
511301401034
61140521410
7214544262
oct61220156
926270346
1012918894
11732417a
1243b0266
1328a4321
141a040a2
151202c49
hexc5206e

12918894 has 8 divisors (see below), whose sum is σ = 25837800. Its totient is φ = 4306296.

The previous prime is 12918889. The next prime is 12918901. The reversal of 12918894 is 49881921.

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

12918894 is an admirable number.

It is a congruent number.

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, 1076569 + ... + 1076580.

It is an arithmetic number, because the mean of its divisors is an integer number (3229725).

Almost surely, 212918894 is an apocalyptic number.

12918894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12918894 is a wasteful number, since it uses less digits than its factorization.

12918894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153154.

The product of its digits is 41472, while the sum is 42.

The square root of 12918894 is about 3594.2862991142. The cubic root of 12918894 is about 234.6434550941.

The spelling of 12918894 in words is "twelve million, nine hundred eighteen thousand, eight hundred ninety-four".

Divisors: 1 2 3 6 2153149 4306298 6459447 12918894