136290 has 64 divisors (see below), whose sum is σ = 414720. Its totient is φ = 27840.

The previous prime is 136277. The next prime is 136303. The reversal of 136290 is 92631.

It is an interprime number because it is at equal distance from previous prime (136277) and next prime (136303).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

136290 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 31 ways as a sum of consecutive naturals, for example, 2281 + ... + 2339.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

2¹³⁶²⁹⁰ is an apocalyptic number.

136290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 136290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207360).

136290 is an abundant number, since it is smaller than the sum of its proper divisors (278430).

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

136290 is a wasteful number, since it uses less digits than its factorization.

136290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 136290 is about 369.1747553666. The cubic root of 136290 is about 51.4621583953.

The spelling of 136290 in words is "one hundred thirty-six thousand, two hundred ninety".