30868998 has 16 divisors (see below), whose sum is σ = 62017536. Its totient is φ = 10243080.

The previous prime is 30868993. The next prime is 30869009. The reversal of 30868998 is 89986803.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30868998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30868993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10198 + ... + 12873.

It is an arithmetic number, because the mean of its divisors is an integer number (3876096).

Almost surely, 2^30868998 is an apocalyptic number.

30868998 is an abundant number, since it is smaller than the sum of its proper divisors (31148538).

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

30868998 is a wasteful number, since it uses less digits than its factorization.

30868998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23299.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 30868998 is about 5555.9875809796. The cubic root of 30868998 is about 313.6949381425.

The spelling of 30868998 in words is "thirty million, eight hundred sixty-eight thousand, nine hundred ninety-eight".