136280881 has 8 divisors (see below), whose sum is σ = 150889824. Its totient is φ = 122041920.

The previous prime is 136280869. The next prime is 136280909. The reversal of 136280881 is 188082631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136280881 - 2¹¹ = 136278833 is a prime.

It is a super-2 number, since 2×136280881² = 37144957052272322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136280881.

It is not an unprimeable number, because it can be changed into a prime (136280801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91720 + ... + 93193.

It is an arithmetic number, because the mean of its divisors is an integer number (18861228).

Almost surely, 2^136280881 is an apocalyptic number.

136280881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136280881 is a deficient number, since it is larger than the sum of its proper divisors (14608943).

136280881 is a wasteful number, since it uses less digits than its factorization.

136280881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184991.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 136280881 is about 11673.9402516888. The cubic root of 136280881 is about 514.6101061271.

The spelling of 136280881 in words is "one hundred thirty-six million, two hundred eighty thousand, eight hundred eighty-one".