144518820 has 24 divisors (see below), whose sum is σ = 404652864. Its totient is φ = 38538336.

The previous prime is 144518791. The next prime is 144518879. The reversal of 144518820 is 28815441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204264 + ... + 1204383.

It is an arithmetic number, because the mean of its divisors is an integer number (16860536).

Almost surely, 2^144518820 is an apocalyptic number.

144518820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144518820 is an abundant number, since it is smaller than the sum of its proper divisors (260134044).

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

144518820 is a wasteful number, since it uses less digits than its factorization.

144518820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2408659 (or 2408657 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 144518820 is about 12021.5980634856. The cubic root of 144518820 is about 524.7770118776. Note that the first 3 decimals are identical.

The spelling of 144518820 in words is "one hundred forty-four million, five hundred eighteen thousand, eight hundred twenty".