30213568 has 56 divisors (see below), whose sum is σ = 74761344. Its totient is φ = 11769600.

The previous prime is 30213541. The next prime is 30213593. The reversal of 30213568 is 86531203.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (1335024).

Almost surely, 2^30213568 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 30213568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37380672).

30213568 is an abundant number, since it is smaller than the sum of its proper divisors (44547776).

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

30213568 is a wasteful number, since it uses less digits than its factorization.

30213568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6161 (or 6151 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 30213568 is about 5496.6870021860. The cubic root of 30213568 is about 311.4588471614.

It can be divided in two parts, 302135 and 68, that added together give a palindrome (302203).

The spelling of 30213568 in words is "thirty million, two hundred thirteen thousand, five hundred sixty-eight".