144520146 has 32 divisors (see below), whose sum is σ = 326606400. Its totient is φ = 47355840.

The previous prime is 144520133. The next prime is 144520147. The reversal of 144520146 is 641025441.

144520146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×144520146² = 41772145199722632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (144520147) 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, 19495 + ... + 25866.

It is an arithmetic number, because the mean of its divisors is an integer number (10206450).

Almost surely, 2^144520146 is an apocalyptic number.

144520146 is an abundant number, since it is smaller than the sum of its proper divisors (182086254).

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

144520146 is a wasteful number, since it uses less digits than its factorization.

144520146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45431 (or 45425 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 144520146 is about 12021.6532140966. The cubic root of 144520146 is about 524.7786168639.

Adding to 144520146 its reverse (641025441), we get a palindrome (785545587).

The spelling of 144520146 in words is "one hundred forty-four million, five hundred twenty thousand, one hundred forty-six".