136215492 has 72 divisors (see below), whose sum is σ = 391505184. Its totient is φ = 36626688.

The previous prime is 136215491. The next prime is 136215493. The reversal of 136215492 is 294512631.

136215492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (136215491) and next prime (136215493).

It is not an unprimeable number, because it can be changed into a prime (136215491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3183 + ... + 16809.

It is an arithmetic number, because the mean of its divisors is an integer number (5437572).

Almost surely, 2^136215492 is an apocalyptic number.

136215492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136215492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195752592).

136215492 is an abundant number, since it is smaller than the sum of its proper divisors (255289692).

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

136215492 is a wasteful number, since it uses less digits than its factorization.

136215492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13665 (or 13656 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 136215492 is about 11671.1392760090. The cubic root of 136215492 is about 514.5277878462.

The spelling of 136215492 in words is "one hundred thirty-six million, two hundred fifteen thousand, four hundred ninety-two".