30061998 has 24 divisors (see below), whose sum is σ = 65335608. Its totient is φ = 9989712.

The previous prime is 30061991. The next prime is 30062041. The reversal of 30061998 is 89916003.

30061998 is a `hidden beast` number, since 30 + 0 + 619 + 9 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30061991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3840 + ... + 8652.

It is an arithmetic number, because the mean of its divisors is an integer number (2722317).

Almost surely, 2^30061998 is an apocalyptic number.

30061998 is an abundant number, since it is smaller than the sum of its proper divisors (35273610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30061998 is a wasteful number, since it uses less digits than its factorization.

30061998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168 (or 5165 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 30061998 is about 5482.8822712147. The cubic root of 30061998 is about 310.9371502046.

The spelling of 30061998 in words is "thirty million, sixty-one thousand, nine hundred ninety-eight".