144686916 has 144 divisors (see below), whose sum is σ = 423783360. Its totient is φ = 41207040.

The previous prime is 144686911. The next prime is 144686921. The reversal of 144686916 is 619686441.

It is an interprime number because it is at equal distance from previous prime (144686911) and next prime (144686921).

It is not an unprimeable number, because it can be changed into a prime (144686911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 493666 + ... + 493958.

It is an arithmetic number, because the mean of its divisors is an integer number (2942940).

Almost surely, 2^144686916 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 144686916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211891680).

144686916 is an abundant number, since it is smaller than the sum of its proper divisors (279096444).

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

144686916 is a wasteful number, since it uses less digits than its factorization.

144686916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 381 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 144686916 is about 12028.5874482418. The cubic root of 144686916 is about 524.9803965469.

The spelling of 144686916 in words is "one hundred forty-four million, six hundred eighty-six thousand, nine hundred sixteen".