30242520 has 192 divisors, whose sum is σ = 122653440. Its totient is φ = 6278400.

The previous prime is 30242503. The next prime is 30242549. The reversal of 30242520 is 2524203.

It is a super-2 number, since 2×30242520² = 1829220031900800, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 30242493 and 30242502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27175 + ... + 28265.

It is an arithmetic number, because the mean of its divisors is an integer number (638820).

Almost surely, 2^30242520 is an apocalyptic number.

30242520 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 30242520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61326720).

30242520 is an abundant number, since it is smaller than the sum of its proper divisors (92410920).

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

30242520 is a wasteful number, since it uses less digits than its factorization.

30242520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126 (or 1119 counting only the distinct ones).

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

The square root of 30242520 is about 5499.3199579584. The cubic root of 30242520 is about 311.5583000275.

Adding to 30242520 its reverse (2524203), we get a palindrome (32766723).

The spelling of 30242520 in words is "thirty million, two hundred forty-two thousand, five hundred twenty".