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38115369 = 324235041
BaseRepresentation
bin1001000101100…
…1100000101001
32122201110110100
42101121200221
534224142434
63440540013
7641655345
oct221314051
978643410
1038115369
111a573706
1210921609
137b86a96
1450c2625
15352d699
hex2459829

38115369 has 6 divisors (see below), whose sum is σ = 55055546. Its totient is φ = 25410240.

The previous prime is 38115359. The next prime is 38115373. The reversal of 38115369 is 96351183.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 660969 = 6120^2 + 813^2 .

It is not a de Polignac number, because 38115369 - 24 = 38115353 is a prime.

It is a super-2 number, since 2×381153692 = 2905562708012322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38115359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2117512 + ... + 2117529.

Almost surely, 238115369 is an apocalyptic number.

It is an amenable number.

38115369 is a deficient number, since it is larger than the sum of its proper divisors (16940177).

38115369 is a wasteful number, since it uses less digits than its factorization.

38115369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4235047 (or 4235044 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 38115369 is about 6173.7645727708. The cubic root of 38115369 is about 336.5374317991.

It can be divided in two parts, 3811 and 5369, that added together give a triangular number (9180 = T135).

The spelling of 38115369 in words is "thirty-eight million, one hundred fifteen thousand, three hundred sixty-nine".

Divisors: 1 3 9 4235041 12705123 38115369