144555040 has 96 divisors (see below), whose sum is σ = 410901120. Its totient is φ = 46946304.

The previous prime is 144555011. The next prime is 144555043. The reversal of 144555040 is 40555441.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144555043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17884 + ... + 24676.

It is an arithmetic number, because the mean of its divisors is an integer number (4280220).

Almost surely, 2^144555040 is an apocalyptic number.

144555040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144555040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205450560).

144555040 is an abundant number, since it is smaller than the sum of its proper divisors (266346080).

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

144555040 is a wasteful number, since it uses less digits than its factorization.

144555040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6834 (or 6826 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 144555040 is about 12023.1044243989. The cubic root of 144555040 is about 524.8208489263.

The spelling of 144555040 in words is "one hundred forty-four million, five hundred fifty-five thousand, forty".