30013506 has 12 divisors (see below), whose sum is σ = 65029302. Its totient is φ = 10004496.

The previous prime is 30013499. The next prime is 30013513. The reversal of 30013506 is 60531003.

It is an interprime number because it is at equal distance from previous prime (30013499) and next prime (30013513).

It can be written as a sum of positive squares in only one way, i.e., 29062881 + 950625 = 5391^2 + 975^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1667417 = 30013506 / (3 + 0 + 0 + 1 + 3 + 5 + 0 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 833691 + ... + 833726.

Almost surely, 2^30013506 is an apocalyptic number.

30013506 is an abundant number, since it is smaller than the sum of its proper divisors (35015796).

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

30013506 is a wasteful number, since it uses less digits than its factorization.

30013506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667425 (or 1667422 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 30013506 is about 5478.4583597943. The cubic root of 30013506 is about 310.7698728021.

Adding to 30013506 its reverse (60531003), we get a palindrome (90544509).

The spelling of 30013506 in words is "thirty million, thirteen thousand, five hundred six".