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12387054 = 235338953
BaseRepresentation
bin101111010000…
…001011101110
3212022022211210
4233100023232
511132341204
61121255250
7210200601
oct57201356
925268753
1012387054
116aa0639
124194526
132749224
141906338
15114a389
hexbd02ee

12387054 has 16 divisors (see below), whose sum is σ = 25242192. Its totient is φ = 4051008.

The previous prime is 12387029. The next prime is 12387059. The reversal of 12387054 is 45078321.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19159 + ... + 19794.

It is an arithmetic number, because the mean of its divisors is an integer number (1577637).

Almost surely, 212387054 is an apocalyptic number.

12387054 is an abundant number, since it is smaller than the sum of its proper divisors (12855138).

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

12387054 is a wasteful number, since it uses less digits than its factorization.

12387054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39011.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 12387054 is about 3519.5246838174. The cubic root of 12387054 is about 231.3783272161.

The spelling of 12387054 in words is "twelve million, three hundred eighty-seven thousand, fifty-four".

Divisors: 1 2 3 6 53 106 159 318 38953 77906 116859 233718 2064509 4129018 6193527 12387054