Search a number
-
+
38115085 = 57623017
BaseRepresentation
bin1001000101100…
…1011100001101
32122201110001211
42101121130031
534224140320
63440534421
7641654461
oct221313415
978643054
1038115085
111a573478
1210921411
137b86908
1450c24a1
15352d55a
hex245970d

38115085 has 4 divisors (see below), whose sum is σ = 45738108. Its totient is φ = 30492064.

The previous prime is 38115079. The next prime is 38115097. The reversal of 38115085 is 58051183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10426441 + 27688644 = 3229^2 + 5262^2 .

It is a cyclic number.

It is not a de Polignac number, because 38115085 - 25 = 38115053 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 3811504 + ... + 3811513.

It is an arithmetic number, because the mean of its divisors is an integer number (11434527).

Almost surely, 238115085 is an apocalyptic number.

It is an amenable number.

38115085 is a deficient number, since it is larger than the sum of its proper divisors (7623023).

38115085 is an equidigital number, since it uses as much as digits as its factorization.

38115085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7623022.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 38115085 is about 6173.7415721749. The cubic root of 38115085 is about 336.5365959432.

The spelling of 38115085 in words is "thirty-eight million, one hundred fifteen thousand, eighty-five".

Divisors: 1 5 7623017 38115085