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12214480 = 245152681
BaseRepresentation
bin101110100110…
…000011010000
3211222120010011
4232212003100
511111330410
61113444304
7205551505
oct56460320
924876104
1012214480
116992a13
124110694
1326b8805
14189d4ac
15111418a
hexba60d0

12214480 has 20 divisors (see below), whose sum is σ = 28398852. Its totient is φ = 4885760.

The previous prime is 12214469. The next prime is 12214493. The reversal of 12214480 is 8441221.

It can be written as a sum of positive squares in 2 ways, for example, as 7160976 + 5053504 = 2676^2 + 2248^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 76261 + ... + 76420.

Almost surely, 212214480 is an apocalyptic number.

12214480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12214480 is an abundant number, since it is smaller than the sum of its proper divisors (16184372).

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

12214480 is a wasteful number, since it uses less digits than its factorization.

12214480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152694 (or 152688 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 12214480 is about 3494.9220306038. The cubic root of 12214480 is about 230.2987925155.

The spelling of 12214480 in words is "twelve million, two hundred fourteen thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 152681 305362 610724 763405 1221448 1526810 2442896 3053620 6107240 12214480