144243280 has 40 divisors (see below), whose sum is σ = 335916000. Its totient is φ = 57602688.

The previous prime is 144243271. The next prime is 144243299. The reversal of 144243280 is 82342441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×144243280² = 41612247650316800, 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 7 ways as a sum of consecutive naturals, for example, 67671 + ... + 69769.

It is an arithmetic number, because the mean of its divisors is an integer number (8397900).

Almost surely, 2^144243280 is an apocalyptic number.

144243280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144243280 is an abundant number, since it is smaller than the sum of its proper divisors (191672720).

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

144243280 is a wasteful number, since it uses less digits than its factorization.

144243280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2965 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 144243280 is about 12010.1323889456. The cubic root of 144243280 is about 524.4432859040.

The spelling of 144243280 in words is "one hundred forty-four million, two hundred forty-three thousand, two hundred eighty".