136448281 has 8 divisors (see below), whose sum is σ = 137838464. Its totient is φ = 135064800.

The previous prime is 136448243. The next prime is 136448309. The reversal of 136448281 is 182844631.

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

It is a cyclic number.

It is not a de Polignac number, because 136448281 - 2⁷ = 136448153 is a prime.

It is a super-2 number, since 2×136448281² = 37236266775709922, 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 136448281.

It is not an unprimeable number, because it can be changed into a prime (136448881) 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, 45820 + ... + 48706.

It is an arithmetic number, because the mean of its divisors is an integer number (17229808).

Almost surely, 2^136448281 is an apocalyptic number.

It is an amenable number.

136448281 is a deficient number, since it is larger than the sum of its proper divisors (1390183).

136448281 is a wasteful number, since it uses less digits than its factorization.

136448281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3351.

The product of its digits is 36864, while the sum is 37.

The square root of 136448281 is about 11681.1078669791. The cubic root of 136448281 is about 514.8207262398.

The spelling of 136448281 in words is "one hundred thirty-six million, four hundred forty-eight thousand, two hundred eighty-one".