30684472 has 64 divisors (see below), whose sum is σ = 71628480. Its totient is φ = 11999232.

The previous prime is 30684431. The next prime is 30684529. The reversal of 30684472 is 27448603.

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, 82078 + ... + 82450.

It is an arithmetic number, because the mean of its divisors is an integer number (1119195).

Almost surely, 2^30684472 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 30684472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35814240).

30684472 is an abundant number, since it is smaller than the sum of its proper divisors (40944008).

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

30684472 is a wasteful number, since it uses less digits than its factorization.

30684472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 30684472 is about 5539.3566413438. The cubic root of 30684472 is about 313.0686291141.

It can be divided in two parts, 306844 and 72, that added together give a square (306916 = 554²).

The spelling of 30684472 in words is "thirty million, six hundred eighty-four thousand, four hundred seventy-two".