144398536 has 16 divisors (see below), whose sum is σ = 271086300. Its totient is φ = 72108864.

The previous prime is 144398497. The next prime is 144398539. The reversal of 144398536 is 635893441.

It can be written as a sum of positive squares in 2 ways, for example, as 140422500 + 3976036 = 11850^2 + 1994^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144398492 and 144398501.

It is not an unprimeable number, because it can be changed into a prime (144398539) 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, 4255 + ... + 17518.

Almost surely, 2^144398536 is an apocalyptic number.

It is an amenable number.

144398536 is a deficient number, since it is larger than the sum of its proper divisors (126687764).

144398536 is a wasteful number, since it uses less digits than its factorization.

144398536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22608 (or 22604 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 144398536 is about 12016.5941930316. The cubic root of 144398536 is about 524.6313796373.

The spelling of 144398536 in words is "one hundred forty-four million, three hundred ninety-eight thousand, five hundred thirty-six".