30081245 has 8 divisors (see below), whose sum is σ = 38220984. Its totient is φ = 22649344.

The previous prime is 30081241. The next prime is 30081277. The reversal of 30081245 is 54218003.

It can be written as a sum of positive squares in 4 ways, for example, as 942841 + 29138404 = 971^2 + 5398^2 .

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 30081245 - 2² = 30081241 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30081245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30081241) 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, 176864 + ... + 177033.

It is an arithmetic number, because the mean of its divisors is an integer number (4777623).

Almost surely, 2^30081245 is an apocalyptic number.

It is an amenable number.

30081245 is a deficient number, since it is larger than the sum of its proper divisors (8139739).

30081245 is a wasteful number, since it uses less digits than its factorization.

30081245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353919.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 30081245 is about 5484.6371803429. The cubic root of 30081245 is about 311.0034945483.

Adding to 30081245 its reverse (54218003), we get a palindrome (84299248).

The spelling of 30081245 in words is "thirty million, eighty-one thousand, two hundred forty-five".