30442464 has 144 divisors (see below), whose sum is σ = 95764032. Its totient is φ = 9114624.

The previous prime is 30442441. The next prime is 30442481. The reversal of 30442464 is 46424403.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×30442464² = 1853487228782592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175882 + ... + 176054.

It is an arithmetic number, because the mean of its divisors is an integer number (665028).

Almost surely, 2^30442464 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 30442464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47882016).

30442464 is an abundant number, since it is smaller than the sum of its proper divisors (65321568).

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

30442464 is a wasteful number, since it uses less digits than its factorization.

30442464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 30442464 is about 5517.4689849604. The cubic root of 30442464 is about 312.2433998113.

Adding to 30442464 its reverse (46424403), we get a palindrome (76866867).

The spelling of 30442464 in words is "thirty million, four hundred forty-two thousand, four hundred sixty-four".