136440224 has 24 divisors (see below), whose sum is σ = 268894080. Its totient is φ = 68149696.

The previous prime is 136440221. The next prime is 136440281. The reversal of 136440224 is 422044631.

It is a junction number, because it is equal to n+sod(n) for n = 136440193 and 136440202.

It is not an unprimeable number, because it can be changed into a prime (136440221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44567 + ... + 47529.

It is an arithmetic number, because the mean of its divisors is an integer number (11203920).

Almost surely, 2^136440224 is an apocalyptic number.

It is an amenable number.

136440224 is a deficient number, since it is larger than the sum of its proper divisors (132453856).

136440224 is a wasteful number, since it uses less digits than its factorization.

136440224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412 (or 4404 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 136440224 is about 11680.7629887777. The cubic root of 136440224 is about 514.8105929932.

Adding to 136440224 its reverse (422044631), we get a palindrome (558484855).

The spelling of 136440224 in words is "one hundred thirty-six million, four hundred forty thousand, two hundred twenty-four".