730144 has 12 divisors (see below), whose sum is σ = 1437534. Its totient is φ = 365056.

The previous prime is 730139. The next prime is 730157. The reversal of 730144 is 441037.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 384400 + 345744 = 620^2 + 588^2 .

It is a super-2 number, since 2×730144² = 1066220521472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11377 + ... + 11440.

2⁷³⁰¹⁴⁴ is an apocalyptic number.

It is an amenable number.

730144 is a deficient number, since it is larger than the sum of its proper divisors (707390).

730144 is a wasteful number, since it uses less digits than its factorization.

730144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22827 (or 22819 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 730144 is about 854.4846400024. The cubic root of 730144 is about 90.0470535846.

The spelling of 730144 in words is "seven hundred thirty thousand, one hundred forty-four".