144972864 has 168 divisors, whose sum is σ = 448860672. Its totient is φ = 44605440.

The previous prime is 144972857. The next prime is 144972911. The reversal of 144972864 is 468279441.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 410512 + ... + 410864.

Almost surely, 2^144972864 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 144972864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224430336).

144972864 is an abundant number, since it is smaller than the sum of its proper divisors (303887808).

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

144972864 is a wasteful number, since it uses less digits than its factorization.

144972864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 412 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 144972864 is about 12040.4677649998. The cubic root of 144972864 is about 525.3260124781.

The spelling of 144972864 in words is "one hundred forty-four million, nine hundred seventy-two thousand, eight hundred sixty-four".