30052440 has 96 divisors (see below), whose sum is σ = 106563600. Its totient is φ = 7284480.

The previous prime is 30052427. The next prime is 30052441. The reversal of 30052440 is 4425003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30052441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166 + ... + 7754.

Almost surely, 2^30052440 is an apocalyptic number.

30052440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30052440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53281800).

30052440 is an abundant number, since it is smaller than the sum of its proper divisors (76511160).

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

30052440 is a wasteful number, since it uses less digits than its factorization.

30052440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7617 (or 7610 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 30052440 is about 5482.0105800701. The cubic root of 30052440 is about 310.9041932877.

Adding to 30052440 its reverse (4425003), we get a palindrome (34477443).

It can be divided in two parts, 3005 and 2440, that added together give a palindrome (5445).

The spelling of 30052440 in words is "thirty million, fifty-two thousand, four hundred forty".