144564520 has 64 divisors (see below), whose sum is σ = 333590400. Its totient is φ = 56367360.

The previous prime is 144564487. The next prime is 144564523. The reversal of 144564520 is 25465441.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (144564523) 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, 309327 + ... + 309793.

It is an arithmetic number, because the mean of its divisors is an integer number (5212350).

Almost surely, 2^144564520 is an apocalyptic number.

144564520 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 144564520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166795200).

144564520 is an abundant number, since it is smaller than the sum of its proper divisors (189025880).

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

144564520 is a wasteful number, since it uses less digits than its factorization.

144564520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658 (or 654 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 144564520 is about 12023.4986588763. The cubic root of 144564520 is about 524.8323213567.

The spelling of 144564520 in words is "one hundred forty-four million, five hundred sixty-four thousand, five hundred twenty".