144999620 has 12 divisors (see below), whose sum is σ = 304499244. Its totient is φ = 57999840.

The previous prime is 144999619. The next prime is 144999629. The reversal of 144999620 is 26999441.

It can be written as a sum of positive squares in 2 ways, for example, as 34833604 + 110166016 = 5902^2 + 10496^2 .

It is not an unprimeable number, because it can be changed into a prime (144999629) 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, 3624971 + ... + 3625010.

It is an arithmetic number, because the mean of its divisors is an integer number (25374937).

Almost surely, 2^144999620 is an apocalyptic number.

144999620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144999620 is an abundant number, since it is smaller than the sum of its proper divisors (159499624).

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

144999620 is a wasteful number, since it uses less digits than its factorization.

144999620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249990 (or 7249988 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 144999620 is about 12041.5788001408. The cubic root of 144999620 is about 525.3583283148.

The spelling of 144999620 in words is "one hundred forty-four million, nine hundred ninety-nine thousand, six hundred twenty".