144423730 has 64 divisors (see below), whose sum is σ = 300174336. Its totient is φ = 49536000.

The previous prime is 144423703. The next prime is 144423743. The reversal of 144423730 is 37324441.

It is a super-2 number, since 2×144423730² = 41716427574225800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139294 + ... + 140326.

It is an arithmetic number, because the mean of its divisors is an integer number (4690224).

Almost surely, 2^144423730 is an apocalyptic number.

144423730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144423730 is an abundant number, since it is smaller than the sum of its proper divisors (155750606).

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

144423730 is a wasteful number, since it uses less digits than its factorization.

144423730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 144423730 is about 12017.6424476683. The cubic root of 144423730 is about 524.6618896288.

The spelling of 144423730 in words is "one hundred forty-four million, four hundred twenty-three thousand, seven hundred thirty".