30668472 has 48 divisors (see below), whose sum is σ = 83528640. Its totient is φ = 10165248.

The previous prime is 30668467. The next prime is 30668479. The reversal of 30668472 is 27486603.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30668479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12793 + ... + 14999.

It is an arithmetic number, because the mean of its divisors is an integer number (1740180).

Almost surely, 2^30668472 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 30668472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41764320).

30668472 is an abundant number, since it is smaller than the sum of its proper divisors (52860168).

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

30668472 is a wasteful number, since it uses less digits than its factorization.

30668472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 30668472 is about 5537.9122419916. The cubic root of 30668472 is about 313.0142045291.

The spelling of 30668472 in words is "thirty million, six hundred sixty-eight thousand, four hundred seventy-two".