144721716 has 48 divisors (see below), whose sum is σ = 351267840. Its totient is φ = 46318720.

The previous prime is 144721711. The next prime is 144721721. The reversal of 144721716 is 617127441.

It is an interprime number because it is at equal distance from previous prime (144721711) and next prime (144721721).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144721711) 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, 67501 + ... + 69611.

It is an arithmetic number, because the mean of its divisors is an integer number (7318080).

Almost surely, 2^144721716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144721716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175633920).

144721716 is an abundant number, since it is smaller than the sum of its proper divisors (206546124).

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

144721716 is a wasteful number, since it uses less digits than its factorization.

144721716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344 (or 2342 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 144721716 is about 12030.0339151642. The cubic root of 144721716 is about 525.0224824839.

The spelling of 144721716 in words is "one hundred forty-four million, seven hundred twenty-one thousand, seven hundred sixteen".