136241988 has 12 divisors (see below), whose sum is σ = 317898000. Its totient is φ = 45413992.

The previous prime is 136241891. The next prime is 136241999. The reversal of 136241988 is 889142631.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5676738 + ... + 5676761.

It is an arithmetic number, because the mean of its divisors is an integer number (26491500).

Almost surely, 2^136241988 is an apocalyptic number.

It is an amenable number.

136241988 is an abundant number, since it is smaller than the sum of its proper divisors (181656012).

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

136241988 is a wasteful number, since it uses less digits than its factorization.

136241988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11353506 (or 11353504 counting only the distinct ones).

The product of its digits is 82944, while the sum is 42.

The square root of 136241988 is about 11672.2743285103. The cubic root of 136241988 is about 514.5611468624.

The spelling of 136241988 in words is "one hundred thirty-six million, two hundred forty-one thousand, nine hundred eighty-eight".