30998245 has 16 divisors (see below), whose sum is σ = 39035520. Its totient is φ = 23598400.

The previous prime is 30998203. The next prime is 30998263. The reversal of 30998245 is 54289903.

It is a happy number.

It is not a de Polignac number, because 30998245 - 2⁷ = 30998117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30998198 and 30998207.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8790 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (2439720).

Almost surely, 2^30998245 is an apocalyptic number.

It is an amenable number.

30998245 is a deficient number, since it is larger than the sum of its proper divisors (8037275).

30998245 is a wasteful number, since it uses less digits than its factorization.

30998245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3116.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 30998245 is about 5567.6067569468. The cubic root of 30998245 is about 314.1321370380.

The spelling of 30998245 in words is "thirty million, nine hundred ninety-eight thousand, two hundred forty-five".