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38315069 = 137094157
BaseRepresentation
bin1001001000101…
…0010000111101
32200002121101122
42102022100331
534302040234
63445120325
7643446512
oct222122075
980077348
1038315069
111a69a751
12109b90a5
137c26950
145135309
15356c92e
hex248a43d

38315069 has 8 divisors (see below), whose sum is σ = 41330520. Its totient is φ = 35309376.

The previous prime is 38315063. The next prime is 38315071. The reversal of 38315069 is 96051383.

It can be written as a sum of positive squares in 4 ways, for example, as 36100 + 38278969 = 190^2 + 6187^2 .

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-38315069 is a prime.

It is a super-2 number, since 2×383150692 = 2936089024949522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38315063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7139 + ... + 11295.

It is an arithmetic number, because the mean of its divisors is an integer number (5166315).

Almost surely, 238315069 is an apocalyptic number.

It is an amenable number.

38315069 is a deficient number, since it is larger than the sum of its proper divisors (3015451).

38315069 is a wasteful number, since it uses less digits than its factorization.

38315069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4879.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 38315069 is about 6189.9167199567. The cubic root of 38315069 is about 337.1241548137.

The spelling of 38315069 in words is "thirty-eight million, three hundred fifteen thousand, sixty-nine".

Divisors: 1 13 709 4157 9217 54041 2947313 38315069