30012489 has 12 divisors (see below), whose sum is σ = 46686276. Its totient is φ = 18469152.

The previous prime is 30012487. The next prime is 30012503. The reversal of 30012489 is 98421003.

It can be written as a sum of positive squares in 2 ways, for example, as 5212089 + 24800400 = 2283^2 + 4980^2 .

It is not a de Polignac number, because 30012489 - 2¹ = 30012487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30012487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128142 + ... + 128375.

It is an arithmetic number, because the mean of its divisors is an integer number (3890523).

Almost surely, 2^30012489 is an apocalyptic number.

30012489 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

30012489 is a deficient number, since it is larger than the sum of its proper divisors (16673787).

30012489 is a wasteful number, since it uses less digits than its factorization.

30012489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256536 (or 256533 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 30012489 is about 5478.3655409255. The cubic root of 30012489 is about 310.7663626432.

The spelling of 30012489 in words is "thirty million, twelve thousand, four hundred eighty-nine".