Search a number
-
+
38828165 = 59977789
BaseRepresentation
bin1001010000011…
…1100010000101
32201001200020012
42110013202011
534420000130
63504120005
7651014435
oct224074205
981050205
1038828165
111aa101a2
1211006005
13807635c
14522a2c5
15361e995
hex2507885

38828165 has 8 divisors (see below), whose sum is σ = 46646520. Its totient is φ = 31027392.

The previous prime is 38828131. The next prime is 38828177. The reversal of 38828165 is 56182883.

It can be written as a sum of positive squares in 4 ways, for example, as 11276164 + 27552001 = 3358^2 + 5249^2 .

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 38828165 - 210 = 38827141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1091 + ... + 8879.

It is an arithmetic number, because the mean of its divisors is an integer number (5830815).

Almost surely, 238828165 is an apocalyptic number.

It is an amenable number.

38828165 is a deficient number, since it is larger than the sum of its proper divisors (7818355).

38828165 is an equidigital number, since it uses as much as digits as its factorization.

38828165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8791.

The product of its digits is 92160, while the sum is 41.

The square root of 38828165 is about 6231.2249999498. The cubic root of 38828165 is about 338.6223521999.

The spelling of 38828165 in words is "thirty-eight million, eight hundred twenty-eight thousand, one hundred sixty-five".

Divisors: 1 5 997 4985 7789 38945 7765633 38828165