144312660 has 72 divisors (see below), whose sum is σ = 463508136. Its totient is φ = 36218880.

The previous prime is 144312653. The next prime is 144312689. The reversal of 144312660 is 66213441.

It can be written as a sum of positive squares in 4 ways, for example, as 10771524 + 133541136 = 3282^2 + 11556^2 .

It is a super-2 number, since 2×144312660² = 41652287672551200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20521 + ... + 26640.

It is an arithmetic number, because the mean of its divisors is an integer number (6437613).

Almost surely, 2^144312660 is an apocalyptic number.

144312660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144312660 is an abundant number, since it is smaller than the sum of its proper divisors (319195476).

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

144312660 is a wasteful number, since it uses less digits than its factorization.

144312660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47193 (or 47188 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 144312660 is about 12013.0204361767. The cubic root of 144312660 is about 524.5273569331.

The spelling of 144312660 in words is "one hundred forty-four million, three hundred twelve thousand, six hundred sixty".