30145473 has 8 divisors (see below), whose sum is σ = 44660000. Its totient is φ = 20096964.

The previous prime is 30145469. The next prime is 30145477. The reversal of 30145473 is 37454103.

30145473 is nontrivially palindromic in base 16.

It is an interprime number because it is at equal distance from previous prime (30145469) and next prime (30145477).

It is not a de Polignac number, because 30145473 - 2² = 30145469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 1116499 = 30145473 / (3 + 0 + 1 + 4 + 5 + 4 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30145477) 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, 558223 + ... + 558276.

It is an arithmetic number, because the mean of its divisors is an integer number (5582500).

Almost surely, 2^30145473 is an apocalyptic number.

It is an amenable number.

30145473 is a deficient number, since it is larger than the sum of its proper divisors (14514527).

30145473 is a wasteful number, since it uses less digits than its factorization.

30145473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116508 (or 1116502 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 30145473 is about 5490.4893224557. The cubic root of 30145473 is about 311.2246836718.

Adding to 30145473 its reverse (37454103), we get a palindrome (67599576).

The spelling of 30145473 in words is "thirty million, one hundred forty-five thousand, four hundred seventy-three".