144117636 has 96 divisors (see below), whose sum is σ = 396039168. Its totient is φ = 40366080.

The previous prime is 144117629. The next prime is 144117643. The reversal of 144117636 is 636711441.

It is an interprime number because it is at equal distance from previous prime (144117629) and next prime (144117643).

It is a junction number, because it is equal to n+sod(n) for n = 144117597 and 144117606.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81336 + ... + 83088.

It is an arithmetic number, because the mean of its divisors is an integer number (4125408).

Almost surely, 2^144117636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144117636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198019584).

144117636 is an abundant number, since it is smaller than the sum of its proper divisors (251921532).

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

144117636 is a wasteful number, since it uses less digits than its factorization.

144117636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1819 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 144117636 is about 12004.9004993794. The cubic root of 144117636 is about 524.2909684819.

The spelling of 144117636 in words is "one hundred forty-four million, one hundred seventeen thousand, six hundred thirty-six".