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136638 = 2327591
BaseRepresentation
bin100001010110111110
320221102200
4201112332
513333023
62532330
71106235
oct412676
9227380
10136638
1193727
12670a6
134a268
1437b1c
152a743
hex215be

136638 has 12 divisors (see below), whose sum is σ = 296088. Its totient is φ = 45540.

The previous prime is 136621. The next prime is 136649. The reversal of 136638 is 836631.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 136638.

It is an unprimeable number.

136638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3778 + ... + 3813.

It is an arithmetic number, because the mean of its divisors is an integer number (24674).

2136638 is an apocalyptic number.

136638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

136638 is an abundant number, since it is smaller than the sum of its proper divisors (159450).

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

136638 is a wasteful number, since it uses less digits than its factorization.

136638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7599 (or 7596 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 136638 is about 369.6457763860. The cubic root of 136638 is about 51.5059219633.

It can be divided in two parts, 136 and 638, that multiplied together give a palindrome (86768).

The spelling of 136638 in words is "one hundred thirty-six thousand, six hundred thirty-eight".

Divisors: 1 2 3 6 9 18 7591 15182 22773 45546 68319 136638