Search a number
-
+
10187868 = 2231376197
BaseRepresentation
bin100110110111…
…010001011100
3201011121010110
4212313101130
510102002433
61002210020
7152411145
oct46672134
921147113
1010187868
115829329
1234b3910
132159232
1414d2acc
15d63963
hex9b745c

10187868 has 24 divisors (see below), whose sum is σ = 23949072. Its totient is φ = 3370624.

The previous prime is 10187843. The next prime is 10187869. The reversal of 10187868 is 86878101.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10187869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455 + ... + 4742.

It is an arithmetic number, because the mean of its divisors is an integer number (997878).

Almost surely, 210187868 is an apocalyptic number.

It is an amenable number.

10187868 is an abundant number, since it is smaller than the sum of its proper divisors (13761204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10187868 is a wasteful number, since it uses less digits than its factorization.

10187868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6341 (or 6339 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 10187868 is about 3191.8439811495. The cubic root of 10187868 is about 216.7842717220.

The spelling of 10187868 in words is "ten million, one hundred eighty-seven thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 137 274 411 548 822 1644 6197 12394 18591 24788 37182 74364 848989 1697978 2546967 3395956 5093934 10187868