144901440 has 224 divisors, whose sum is σ = 528645120. Its totient is φ = 37324800.

The previous prime is 144901411. The next prime is 144901441. The reversal of 144901440 is 44109441.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144901441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 267570 + ... + 268110.

Almost surely, 2^144901440 is an apocalyptic number.

144901440 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 144901440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264322560).

144901440 is an abundant number, since it is smaller than the sum of its proper divisors (383743680).

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

144901440 is a wasteful number, since it uses less digits than its factorization.

144901440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 144901440 is about 12037.5014018691. The cubic root of 144901440 is about 525.2397272530.

The spelling of 144901440 in words is "one hundred forty-four million, nine hundred one thousand, four hundred forty".