30452240 has 160 divisors (see below), whose sum is σ = 89994240. Its totient is φ = 9326592.

The previous prime is 30452203. The next prime is 30452293. The reversal of 30452240 is 4225403.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342116 + ... + 342204.

It is an arithmetic number, because the mean of its divisors is an integer number (562464).

Almost surely, 2^30452240 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 30452240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44997120).

30452240 is an abundant number, since it is smaller than the sum of its proper divisors (59542000).

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

30452240 is a wasteful number, since it uses less digits than its factorization.

30452240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 30452240 is about 5518.3548273013. The cubic root of 30452240 is about 312.2768198479.

Adding to 30452240 its reverse (4225403), we get a palindrome (34677643).

The spelling of 30452240 in words is "thirty million, four hundred fifty-two thousand, two hundred forty".