[go: up one dir, main page]

Search a number
-
+
137008687 = 266351449
BaseRepresentation
bin10000010101010…
…01011000101111
3100112210202120211
420022221120233
5240033234222
621332323251
73252361144
oct1012513057
9315722524
10137008687
1170379722
1239a73527
132250093a
14142a63cb
15c065277
hex82a962f

137008687 has 4 divisors (see below), whose sum is σ = 137062800. Its totient is φ = 136954576.

The previous prime is 137008633. The next prime is 137008691. The reversal of 137008687 is 786800731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-137008687 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137008607) 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 3 ways as a sum of consecutive naturals, for example, 23062 + ... + 28387.

It is an arithmetic number, because the mean of its divisors is an integer number (34265700).

Almost surely, 2137008687 is an apocalyptic number.

137008687 is a deficient number, since it is larger than the sum of its proper divisors (54113).

137008687 is an equidigital number, since it uses as much as digits as its factorization.

137008687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54112.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 137008687 is about 11705.0709950858. The cubic root of 137008687 is about 515.5245693447.

The spelling of 137008687 in words is "one hundred thirty-seven million, eight thousand, six hundred eighty-seven".

Divisors: 1 2663 51449 137008687