30145460 has 36 divisors (see below), whose sum is σ = 64545348. Its totient is φ = 11826432.

The previous prime is 30145447. The next prime is 30145469. The reversal of 30145460 is 6454103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6739216 + 23406244 = 2596^2 + 4838^2 .

It is a super-2 number, since 2×30145460² = 1817497517223200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30145469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69404 + ... + 69836.

Almost surely, 2^30145460 is an apocalyptic number.

It is an amenable number.

30145460 is an abundant number, since it is smaller than the sum of its proper divisors (34399888).

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

30145460 is a wasteful number, since it uses less digits than its factorization.

30145460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 30145460 is about 5490.4881385902. The cubic root of 30145460 is about 311.2246389340.

Adding to 30145460 its reverse (6454103), we get a palindrome (36599563).

The spelling of 30145460 in words is "thirty million, one hundred forty-five thousand, four hundred sixty".