30258989 has 8 divisors (see below), whose sum is σ = 30878232. Its totient is φ = 29643840.

The previous prime is 30258983. The next prime is 30259013. The reversal of 30258989 is 98985203.

It can be written as a sum of positive squares in 4 ways, for example, as 2748964 + 27510025 = 1658^2 + 5245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30258989 - 2¹⁶ = 30193453 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30258983) 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, 17027 + ... + 18719.

It is an arithmetic number, because the mean of its divisors is an integer number (3859779).

Almost surely, 2^30258989 is an apocalyptic number.

It is an amenable number.

30258989 is a deficient number, since it is larger than the sum of its proper divisors (619243).

30258989 is a wasteful number, since it uses less digits than its factorization.

30258989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 30258989 is about 5500.8171211194. The cubic root of 30258989 is about 311.6148442852.

The spelling of 30258989 in words is "thirty million, two hundred fifty-eight thousand, nine hundred eighty-nine".