136391850 has 240 divisors, whose sum is σ = 460202688. Its totient is φ = 29237760.

The previous prime is 136391839. The next prime is 136391873. The reversal of 136391850 is 58193631.

It is a happy number.

136391850 is a `hidden beast` number, since 1 + 3 + 639 + 18 + 5 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 481809 + ... + 482091.

Almost surely, 2^136391850 is an apocalyptic number.

136391850 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 136391850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230101344).

136391850 is an abundant number, since it is smaller than the sum of its proper divisors (323810838).

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

136391850 is a wasteful number, since it uses less digits than its factorization.

136391850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 136391850 is about 11678.6921356803. The cubic root of 136391850 is about 514.7497448782.

The spelling of 136391850 in words is "one hundred thirty-six million, three hundred ninety-one thousand, eight hundred fifty".