30189489 has 32 divisors (see below), whose sum is σ = 45940608. Its totient is φ = 17472000.

The previous prime is 30189487. The next prime is 30189529. The reversal of 30189489 is 98498103.

It is not a de Polignac number, because 30189489 - 2¹ = 30189487 is a prime.

It is a super-2 number, since 2×30189489² = 1822810492162242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30189489.

It is not an unprimeable number, because it can be changed into a prime (30189487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71499 + ... + 71919.

It is an arithmetic number, because the mean of its divisors is an integer number (1435644).

Almost surely, 2^30189489 is an apocalyptic number.

It is an amenable number.

30189489 is a deficient number, since it is larger than the sum of its proper divisors (15751119).

30189489 is a wasteful number, since it uses less digits than its factorization.

30189489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 30189489 is about 5494.4962462450. The cubic root of 30189489 is about 311.3760851083.

The spelling of 30189489 in words is "thirty million, one hundred eighty-nine thousand, four hundred eighty-nine".