144473530 has 32 divisors (see below), whose sum is σ = 281151360. Its totient is φ = 53265600.

The previous prime is 144473521. The next prime is 144473533. The reversal of 144473530 is 35374441.

144473530 = 1958² + 1959² + ... + 1994².

It is a junction number, because it is equal to n+sod(n) for n = 144473492 and 144473501.

It is not an unprimeable number, because it can be changed into a prime (144473533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3246 + ... + 17305.

It is an arithmetic number, because the mean of its divisors is an integer number (8785980).

Almost surely, 2^144473530 is an apocalyptic number.

144473530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144473530 is a deficient number, since it is larger than the sum of its proper divisors (136677830).

144473530 is a wasteful number, since it uses less digits than its factorization.

144473530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20614.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 144473530 is about 12019.7142228923. The cubic root of 144473530 is about 524.7221871056.

The spelling of 144473530 in words is "one hundred forty-four million, four hundred seventy-three thousand, five hundred thirty".