144285730 has 16 divisors (see below), whose sum is σ = 268670520. Its totient is φ = 55724032.

The previous prime is 144285719. The next prime is 144285731. The reversal of 144285730 is 37582441.

It can be written as a sum of positive squares in 4 ways, for example, as 77422401 + 66863329 = 8799^2 + 8177^2 .

It is not an unprimeable number, because it can be changed into a prime (144285731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248479 + ... + 249058.

Almost surely, 2^144285730 is an apocalyptic number.

144285730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144285730 is a deficient number, since it is larger than the sum of its proper divisors (124384790).

144285730 is a wasteful number, since it uses less digits than its factorization.

144285730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497573.

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 144285730 is about 12011.8995167292. The cubic root of 144285730 is about 524.4947277780.

The spelling of 144285730 in words is "one hundred forty-four million, two hundred eighty-five thousand, seven hundred thirty".