30868698 has 32 divisors (see below), whose sum is σ = 71293824. Its totient is φ = 8727552.

The previous prime is 30868661. The next prime is 30868699. The reversal of 30868698 is 89686803.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30868699) 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 15 ways as a sum of consecutive naturals, for example, 286 + ... + 7862.

It is an arithmetic number, because the mean of its divisors is an integer number (2227932).

Almost surely, 2^30868698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30868698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35646912).

30868698 is an abundant number, since it is smaller than the sum of its proper divisors (40425126).

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

30868698 is a wasteful number, since it uses less digits than its factorization.

30868698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7686.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 30868698 is about 5555.9605830135. The cubic root of 30868698 is about 313.6939219257.

It can be divided in two parts, 308 and 68698, that added together give a triangular number (69006 = T₃₇₁).

The spelling of 30868698 in words is "thirty million, eight hundred sixty-eight thousand, six hundred ninety-eight".