136312536 has 128 divisors (see below), whose sum is σ = 384652800. Its totient is φ = 40043520.

The previous prime is 136312523. The next prime is 136312567. The reversal of 136312536 is 635213631.

It is a happy number.

It is a super-2 number, since 2×136312536² = 37162214941502592, which contains 22 as substring.

Its product of digits (9720) is a multiple of the sum of its prime divisors (405).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429850 + ... + 430166.

It is an arithmetic number, because the mean of its divisors is an integer number (3005100).

Almost surely, 2^136312536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136312536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192326400).

136312536 is an abundant number, since it is smaller than the sum of its proper divisors (248340264).

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

136312536 is a wasteful number, since it uses less digits than its factorization.

136312536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 405 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 136312536 is about 11675.2959705525. The cubic root of 136312536 is about 514.6499471810.

The spelling of 136312536 in words is "one hundred thirty-six million, three hundred twelve thousand, five hundred thirty-six".