30012534 has 12 divisors (see below), whose sum is σ = 65027196. Its totient is φ = 10004172.

The previous prime is 30012527. The next prime is 30012553. The reversal of 30012534 is 43521003.

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: 1667363 = 30012534 / (3 + 0 + 0 + 1 + 2 + 5 + 3 + 4).

It is a congruent number.

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, 833664 + ... + 833699.

It is an arithmetic number, because the mean of its divisors is an integer number (5418933).

Almost surely, 2^30012534 is an apocalyptic number.

30012534 is an abundant number, since it is smaller than the sum of its proper divisors (35014662).

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

30012534 is a wasteful number, since it uses less digits than its factorization.

30012534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667371 (or 1667368 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30012534 is about 5478.3696479884. The cubic root of 30012534 is about 310.7665179616.

Adding to 30012534 its reverse (43521003), we get a palindrome (73533537).

The spelling of 30012534 in words is "thirty million, twelve thousand, five hundred thirty-four".