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133808862 = 23114347149
BaseRepresentation
bin1111111100111…
…00001011011110
3100022210012020210
413332130023132
5233223340422
621135553250
73213233205
oct776341336
9308705223
10133808862
1169593640
123898b826
1321950355
1413ab223c
15bb3210c
hex7f9c2de

133808862 has 32 divisors (see below), whose sum is σ = 298742400. Its totient is φ = 39604320.

The previous prime is 133808839. The next prime is 133808863. The reversal of 133808862 is 268808331.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 133808862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133808863) 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, 20737 + ... + 26412.

It is an arithmetic number, because the mean of its divisors is an integer number (9335700).

Almost surely, 2133808862 is an apocalyptic number.

133808862 is an abundant number, since it is smaller than the sum of its proper divisors (164933538).

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

133808862 is a wasteful number, since it uses less digits than its factorization.

133808862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47208.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 133808862 is about 11567.5780524706. The cubic root of 133808862 is about 511.4795711788.

The spelling of 133808862 in words is "one hundred thirty-three million, eight hundred eight thousand, eight hundred sixty-two".

Divisors: 1 2 3 6 11 22 33 43 66 86 129 258 473 946 1419 2838 47149 94298 141447 282894 518639 1037278 1555917 2027407 3111834 4054814 6082221 12164442 22301477 44602954 66904431 133808862