Search a number
-
+
104238915 = 3511631751
BaseRepresentation
bin1100011011010…
…00111101000011
321021010212220120
412031220331003
5203141121130
614202111323
72404005354
oct615507503
9237125816
10104238915
1153927270
122aaab543
1318799041
14dbb5d2b
159240910
hex6368f43

104238915 has 16 divisors (see below), whose sum is σ = 181944576. Its totient is φ = 50540000.

The previous prime is 104238889. The next prime is 104238919. The reversal of 104238915 is 519832401.

It is not a de Polignac number, because 104238915 - 215 = 104206147 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (104238919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315711 + ... + 316040.

It is an arithmetic number, because the mean of its divisors is an integer number (11371536).

Almost surely, 2104238915 is an apocalyptic number.

104238915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

104238915 is a deficient number, since it is larger than the sum of its proper divisors (77705661).

104238915 is a wasteful number, since it uses less digits than its factorization.

104238915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631770.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 104238915 is about 10209.7460791148. The cubic root of 104238915 is about 470.6267705561.

The spelling of 104238915 in words is "one hundred four million, two hundred thirty-eight thousand, nine hundred fifteen".

Divisors: 1 3 5 11 15 33 55 165 631751 1895253 3158755 6949261 9476265 20847783 34746305 104238915