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15142384 = 243130529
BaseRepresentation
bin111001110000…
…110111110000
31001111022110001
4321300313300
512334024014
61300315344
7242464615
oct71606760
931438401
1015142384
118602774
1250a2b54
1331a23ba
14202250c
1514e1974
hexe70df0

15142384 has 20 divisors (see below), whose sum is σ = 30285760. Its totient is φ = 7326720.

The previous prime is 15142381. The next prime is 15142399. The reversal of 15142384 is 48324151.

15142384 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15142381) 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 3 ways as a sum of consecutive naturals, for example, 14769 + ... + 15760.

It is an arithmetic number, because the mean of its divisors is an integer number (1514288).

Almost surely, 215142384 is an apocalyptic number.

It is an amenable number.

15142384 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.

15142384 is a wasteful number, since it uses less digits than its factorization.

15142384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30568 (or 30562 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 15142384 is about 3891.3216263886. The cubic root of 15142384 is about 247.3990827559.

The spelling of 15142384 in words is "fifteen million, one hundred forty-two thousand, three hundred eighty-four".

Divisors: 1 2 4 8 16 31 62 124 248 496 30529 61058 122116 244232 488464 946399 1892798 3785596 7571192 15142384