144005540 has 48 divisors (see below), whose sum is σ = 356772864. Its totient is φ = 47779200.

The previous prime is 144005539. The next prime is 144005551. The reversal of 144005540 is 45500441.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12251 + ... + 20930.

It is an arithmetic number, because the mean of its divisors is an integer number (7432768).

Almost surely, 2^144005540 is an apocalyptic number.

144005540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144005540 is an abundant number, since it is smaller than the sum of its proper divisors (212767324).

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

144005540 is a wasteful number, since it uses less digits than its factorization.

144005540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33228 (or 33226 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 144005540 is about 12000.2308311132. The cubic root of 144005540 is about 524.1550004719.

Adding to 144005540 its reverse (45500441), we get a palindrome (189505981).

The spelling of 144005540 in words is "one hundred forty-four million, five thousand, five hundred forty".