144195588 has 18 divisors (see below), whose sum is σ = 364494494. Its totient is φ = 48065184.

The previous prime is 144195559. The next prime is 144195589. The reversal of 144195588 is 885591441.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 143568324 + 627264 = 11982^2 + 792^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (144195589) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2002681 + ... + 2002752.

Almost surely, 2^144195588 is an apocalyptic number.

144195588 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

144195588 is an abundant number, since it is smaller than the sum of its proper divisors (220298906).

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

144195588 is a wasteful number, since it uses less digits than its factorization.

144195588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005443 (or 4005438 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 144195588 is about 12008.1467346131. The cubic root of 144195588 is about 524.3854796148.

The spelling of 144195588 in words is "one hundred forty-four million, one hundred ninety-five thousand, five hundred eighty-eight".