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136357871 = 1331794283
BaseRepresentation
bin10000010000010…
…10011111101111
3100111120200211112
420020022133233
5234401422441
621310342235
73244010546
oct1010123757
9314520745
10136357871
116aa74761
12397ba97b
1322333640
141417715d
15be874eb
hex820a7ef

136357871 has 16 divisors (see below), whose sum is σ = 153538560. Its totient is φ = 120238560.

The previous prime is 136357861. The next prime is 136357877. The reversal of 136357871 is 178753631.

136357871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2k-136357871 is a prime.

It is a Smith number, since the sum of its digits (41) 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 (136357877) 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, 29696 + ... + 33978.

It is an arithmetic number, because the mean of its divisors is an integer number (9596160).

Almost surely, 2136357871 is an apocalyptic number.

136357871 is a deficient number, since it is larger than the sum of its proper divisors (17180689).

136357871 is a wasteful number, since it uses less digits than its factorization.

136357871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406.

The product of its digits is 105840, while the sum is 41.

The square root of 136357871 is about 11677.2373016908. The cubic root of 136357871 is about 514.7069951728.

The spelling of 136357871 in words is "one hundred thirty-six million, three hundred fifty-seven thousand, eight hundred seventy-one".

Divisors: 1 13 31 79 403 1027 2449 4283 31837 55679 132773 338357 1726049 4398641 10489067 136357871