30212664 has 64 divisors (see below), whose sum is σ = 79228800. Its totient is φ = 9588096.

The previous prime is 30212659. The next prime is 30212671. The reversal of 30212664 is 46621203.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57507 + ... + 58029.

It is an arithmetic number, because the mean of its divisors is an integer number (1237950).

Almost surely, 2^30212664 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 30212664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39614400).

30212664 is an abundant number, since it is smaller than the sum of its proper divisors (49016136).

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

30212664 is a wasteful number, since it uses less digits than its factorization.

30212664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30212664 is about 5496.6047702195. The cubic root of 30212664 is about 311.4557408130.

Adding to 30212664 its reverse (46621203), we get a palindrome (76833867).

It can be divided in two parts, 30212 and 664, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 30212664 in words is "thirty million, two hundred twelve thousand, six hundred sixty-four".