144475820 has 12 divisors (see below), whose sum is σ = 303399264. Its totient is φ = 57790320.

The previous prime is 144475819. The next prime is 144475823. The reversal of 144475820 is 28574441.

It is not an unprimeable number, because it can be changed into a prime (144475823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3611876 + ... + 3611915.

It is an arithmetic number, because the mean of its divisors is an integer number (25283272).

Almost surely, 2^144475820 is an apocalyptic number.

144475820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144475820 is an abundant number, since it is smaller than the sum of its proper divisors (158923444).

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

144475820 is a wasteful number, since it uses less digits than its factorization.

144475820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223800 (or 7223798 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 144475820 is about 12019.8094826832. The cubic root of 144475820 is about 524.7249594876.

The spelling of 144475820 in words is "one hundred forty-four million, four hundred seventy-five thousand, eight hundred twenty".