30868864 has 48 divisors (see below), whose sum is σ = 66637620. Its totient is φ = 14237184.

The previous prime is 30868861. The next prime is 30868879. The reversal of 30868864 is 46886803.

It is a self number, because there is not a number n which added to its sum of digits gives 30868864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30868861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20919 + ... + 22345.

Almost surely, 2^30868864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30868864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33318810).

30868864 is an abundant number, since it is smaller than the sum of its proper divisors (35768756).

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

30868864 is a wasteful number, since it uses less digits than its factorization.

30868864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467 (or 1442 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 30868864 is about 5555.9755219043. The cubic root of 30868864 is about 313.6944842331.

The spelling of 30868864 in words is "thirty million, eight hundred sixty-eight thousand, eight hundred sixty-four".