30449664 has 168 divisors, whose sum is σ = 102229920. Its totient is φ = 8552448.

The previous prime is 30449663. The next prime is 30449701. The reversal of 30449664 is 46694403.

It is a tau number, because it is divible by the number of its divisors (168).

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 (30449663) 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, 516067 + ... + 516125.

Almost surely, 2^30449664 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 30449664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51114960).

30449664 is an abundant number, since it is smaller than the sum of its proper divisors (71780256).

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

30449664 is an equidigital number, since it uses as much as digits as its factorization.

30449664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 30449664 is about 5518.1214194688. The cubic root of 30449664 is about 312.2680142804.

It can be divided in two parts, 30449 and 664, that added together give a palindrome (31113).

The spelling of 30449664 in words is "thirty million, four hundred forty-nine thousand, six hundred sixty-four".