244540136 has 16 divisors (see below), whose sum is σ = 462572100. Its totient is φ = 121187584.

The previous prime is 244540133. The next prime is 244540139. The reversal of 244540136 is 631045442.

244540136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (244540133) and next prime (244540139).

It can be written as a sum of positive squares in 2 ways, for example, as 217562500 + 26977636 = 14750^2 + 5194^2 .

It is a super-2 number, since 2×244540136² = 119599756229796992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 244540099 and 244540108.

It is not an unprimeable number, because it can be changed into a prime (244540133) 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, 134351 + ... + 136158.

Almost surely, 2^244540136 is an apocalyptic number.

It is an amenable number.

244540136 is a deficient number, since it is larger than the sum of its proper divisors (218031964).

244540136 is a wasteful number, since it uses less digits than its factorization.

244540136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270628 (or 270624 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 244540136 is about 15637.7791262059. The cubic root of 244540136 is about 625.3407302642.

Adding to 244540136 its reverse (631045442), we get a palindrome (875585578).

The spelling of 244540136 in words is "two hundred forty-four million, five hundred forty thousand, one hundred thirty-six".