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12288830 = 251228883
BaseRepresentation
bin101110111000…
…001100111110
3212010100002212
4232320030332
511121220310
61115220422
7206311331
oct56701476
925110085
1012288830
116a33864
124147712
1327135c8
1418bc618
15112b205
hexbb833e

12288830 has 8 divisors (see below), whose sum is σ = 22119912. Its totient is φ = 4915528.

The previous prime is 12288823. The next prime is 12288869. The reversal of 12288830 is 3888221.

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

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, 614432 + ... + 614451.

It is an arithmetic number, because the mean of its divisors is an integer number (2764989).

Almost surely, 212288830 is an apocalyptic number.

12288830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12288830 is a deficient number, since it is larger than the sum of its proper divisors (9831082).

12288830 is a wasteful number, since it uses less digits than its factorization.

12288830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228890.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 12288830 is about 3505.5427539826. The cubic root of 12288830 is about 230.7651267361.

The spelling of 12288830 in words is "twelve million, two hundred eighty-eight thousand, eight hundred thirty".

Divisors: 1 2 5 10 1228883 2457766 6144415 12288830