30052500 has 60 divisors (see below), whose sum is σ = 87646944. Its totient is φ = 8012000.

The previous prime is 30052493. The next prime is 30052501. The reversal of 30052500 is 525003.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30052500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30052501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5497 + ... + 9503.

Almost surely, 2^30052500 is an apocalyptic number.

30052500 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 30052500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43823472).

30052500 is an abundant number, since it is smaller than the sum of its proper divisors (57594444).

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

30052500 is a wasteful number, since it uses less digits than its factorization.

30052500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034 (or 4017 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 30052500 is about 5482.0160525121. The cubic root of 30052500 is about 310.9044001954.

Adding to 30052500 its reverse (525003), we get a palindrome (30577503).

The spelling of 30052500 in words is "thirty million, fifty-two thousand, five hundred".