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38385487 = 734715803
BaseRepresentation
bin1001001001101…
…1011101001111
32200020011222201
42102123131033
534311313422
63450422331
7644162020
oct222333517
980204881
1038385487
111a738648
1210a319a7
137c4ca0a
145152c47
153583727
hex249b74f

38385487 has 8 divisors (see below), whose sum is σ = 43998336. Its totient is φ = 32804952.

The previous prime is 38385481. The next prime is 38385509. The reversal of 38385487 is 78458383.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-38385487 is a prime.

It is a super-2 number, since 2×383854872 = 2946891224454338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38385481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5473 + ... + 10330.

It is an arithmetic number, because the mean of its divisors is an integer number (5499792).

Almost surely, 238385487 is an apocalyptic number.

38385487 is a deficient number, since it is larger than the sum of its proper divisors (5612849).

38385487 is a wasteful number, since it uses less digits than its factorization.

38385487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16157.

The product of its digits is 645120, while the sum is 46.

The square root of 38385487 is about 6195.6022306149. The cubic root of 38385487 is about 337.3305582016.

The spelling of 38385487 in words is "thirty-eight million, three hundred eighty-five thousand, four hundred eighty-seven".

Divisors: 1 7 347 2429 15803 110621 5483641 38385487