30445668 has 36 divisors (see below), whose sum is σ = 83957328. Its totient is φ = 9225840.

The previous prime is 30445663. The next prime is 30445693. The reversal of 30445668 is 86654403.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (30445661) 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, 38046 + ... + 38837.

It is an arithmetic number, because the mean of its divisors is an integer number (2332148).

Almost surely, 2^30445668 is an apocalyptic number.

It is an amenable number.

30445668 is an abundant number, since it is smaller than the sum of its proper divisors (53511660).

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

30445668 is a wasteful number, since it uses less digits than its factorization.

30445668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76904 (or 76899 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 30445668 is about 5517.7593278431. The cubic root of 30445668 is about 312.2543537292.

It can be divided in two parts, 30445 and 668, that added together give a palindrome (31113).

The spelling of 30445668 in words is "thirty million, four hundred forty-five thousand, six hundred sixty-eight".