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38987653 = 1571671487
BaseRepresentation
bin1001010010111…
…0011110000101
32201100210000011
42110232132011
534440101103
63511350221
7652250425
oct224563605
981323004
1038987653
112000a001
1211082371
138100b23
14526c485
153651d6d
hex252e785

38987653 has 8 divisors (see below), whose sum is σ = 39497472. Its totient is φ = 38481456.

The previous prime is 38987623. The next prime is 38987659. The reversal of 38987653 is 35678983.

38987653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 38987653 - 217 = 38856581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38987597 and 38987606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38987659) 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, 25476 + ... + 26962.

It is an arithmetic number, because the mean of its divisors is an integer number (4937184).

Almost surely, 238987653 is an apocalyptic number.

It is an amenable number.

38987653 is a deficient number, since it is larger than the sum of its proper divisors (509819).

38987653 is a wasteful number, since it uses less digits than its factorization.

38987653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811.

The product of its digits is 1088640, while the sum is 49.

The square root of 38987653 is about 6244.0093689872. The cubic root of 38987653 is about 339.0853530987.

The spelling of 38987653 in words is "thirty-eight million, nine hundred eighty-seven thousand, six hundred fifty-three".

Divisors: 1 157 167 1487 26219 233459 248329 38987653