144075820 has 24 divisors (see below), whose sum is σ = 345782304. Its totient is φ = 49397376.

The previous prime is 144075809. The next prime is 144075853. The reversal of 144075820 is 28570441.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

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, 514417 + ... + 514696.

It is an arithmetic number, because the mean of its divisors is an integer number (14407596).

Almost surely, 2^144075820 is an apocalyptic number.

144075820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144075820 is an abundant number, since it is smaller than the sum of its proper divisors (201706484).

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

144075820 is a wasteful number, since it uses less digits than its factorization.

144075820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029129 (or 1029127 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 144075820 is about 12003.1587509289. The cubic root of 144075820 is about 524.2402555771.

The spelling of 144075820 in words is "one hundred forty-four million, seventy-five thousand, eight hundred twenty".