144444720 has 160 divisors (see below), whose sum is σ = 516538368. Its totient is φ = 32707584.

The previous prime is 144444709. The next prime is 144444731. The reversal of 144444720 is 27444441.

It is an interprime number because it is at equal distance from previous prime (144444709) and next prime (144444731).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 213022 + ... + 213698.

Almost surely, 2^144444720 is an apocalyptic number.

144444720 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 144444720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258269184).

144444720 is an abundant number, since it is smaller than the sum of its proper divisors (372093648).

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

144444720 is a wasteful number, since it uses less digits than its factorization.

144444720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 30.

The square root of 144444720 is about 12018.5157153452. The cubic root of 144444720 is about 524.6873058574.

It can be divided in two parts, 1444 and 44720, that added together give a palindrome (46164).

The spelling of 144444720 in words is "one hundred forty-four million, four hundred forty-four thousand, seven hundred twenty".