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158387 = 1491063
BaseRepresentation
bin100110101010110011
322001021012
4212222303
520032022
63221135
71226525
oct465263
9261235
10158387
11a8aa9
12777ab
1357128
1441a15
1531de2
hex26ab3

158387 has 4 divisors (see below), whose sum is σ = 159600. Its totient is φ = 157176.

The previous prime is 158371. The next prime is 158393. The reversal of 158387 is 783851.

It can be divided in two parts, 158 and 387, that added together give a palindrome (545).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783851 = 5471433.

It is a cyclic number.

It is not a de Polignac number, because 158387 - 24 = 158371 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158387.

It is not an unprimeable number, because it can be changed into a prime (158357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (39900).

2158387 is an apocalyptic number.

158387 is a deficient number, since it is larger than the sum of its proper divisors (1213).

158387 is a wasteful number, since it uses less digits than its factorization.

158387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212.

The product of its digits is 6720, while the sum is 32.

The square root of 158387 is about 397.9786426430. The cubic root of 158387 is about 54.1053043454.

The spelling of 158387 in words is "one hundred fifty-eight thousand, three hundred eighty-seven".

Divisors: 1 149 1063 158387