144623040 has 56 divisors (see below), whose sum is σ = 459181200. Its totient is φ = 38565888.

The previous prime is 144623027. The next prime is 144623069. The reversal of 144623040 is 40326441.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 144623040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74365 + ... + 76284.

Almost surely, 2^144623040 is an apocalyptic number.

144623040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144623040 is an abundant number, since it is smaller than the sum of its proper divisors (314558160).

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

144623040 is a wasteful number, since it uses less digits than its factorization.

144623040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150669 (or 150659 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 144623040 is about 12025.9319805161. The cubic root of 144623040 is about 524.9031295193.

Adding to 144623040 its reverse (40326441), we get a palindrome (184949481).

The spelling of 144623040 in words is "one hundred forty-four million, six hundred twenty-three thousand, forty".