30169898 has 12 divisors (see below), whose sum is σ = 49743330. Its totient is φ = 13713480.

The previous prime is 30169897. The next prime is 30169901. The reversal of 30169898 is 89896103.

It can be written as a sum of positive squares in only one way, i.e., 25938649 + 4231249 = 5093^2 + 2057^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30169897) 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 5 ways as a sum of consecutive naturals, for example, 62093 + ... + 62576.

Almost surely, 2^30169898 is an apocalyptic number.

30169898 is a deficient number, since it is larger than the sum of its proper divisors (19573432).

30169898 is a wasteful number, since it uses less digits than its factorization.

30169898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124693 (or 124682 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 30169898 is about 5492.7131729228. The cubic root of 30169898 is about 311.3087163088.

The spelling of 30169898 in words is "thirty million, one hundred sixty-nine thousand, eight hundred ninety-eight".