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38230905 = 353182217
BaseRepresentation
bin1001000111010…
…1101101111001
32122221022221110
42101311231321
534241342110
63443230533
7642646236
oct221655571
978838843
1038230905
111a642499
1210978449
137bc754b
14511278d
153552a20
hex2475b79

38230905 has 16 divisors (see below), whose sum is σ = 63143424. Its totient is φ = 19731840.

The previous prime is 38230891. The next prime is 38230921. The reversal of 38230905 is 50903283.

It is a happy number.

It is not a de Polignac number, because 38230905 - 213 = 38222713 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40644 + ... + 41573.

It is an arithmetic number, because the mean of its divisors is an integer number (3946464).

Almost surely, 238230905 is an apocalyptic number.

It is an amenable number.

38230905 is a deficient number, since it is larger than the sum of its proper divisors (24912519).

38230905 is a wasteful number, since it uses less digits than its factorization.

38230905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82256.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 38230905 is about 6183.1145064603. The cubic root of 38230905 is about 336.8771282607.

The spelling of 38230905 in words is "thirty-eight million, two hundred thirty thousand, nine hundred five".

Divisors: 1 3 5 15 31 93 155 465 82217 246651 411085 1233255 2548727 7646181 12743635 38230905