144415640 has 16 divisors (see below), whose sum is σ = 324935280. Its totient is φ = 57766240.

The previous prime is 144415613. The next prime is 144415651. The reversal of 144415640 is 46514441.

144415640 is nontrivially palindromic in base 16.

144415640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805156 + ... + 1805235.

It is an arithmetic number, because the mean of its divisors is an integer number (20308455).

Almost surely, 2^144415640 is an apocalyptic number.

144415640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144415640 is an abundant number, since it is smaller than the sum of its proper divisors (180519640).

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

144415640 is a wasteful number, since it uses less digits than its factorization.

144415640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610402 (or 3610398 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 144415640 is about 12017.3058544750. The cubic root of 144415640 is about 524.6520930071.

The spelling of 144415640 in words is "one hundred forty-four million, four hundred fifteen thousand, six hundred forty".