30424520 has 64 divisors (see below), whose sum is σ = 78779520. Its totient is φ = 10358784.

The previous prime is 30424519. The next prime is 30424523. The reversal of 30424520 is 2542403.

30424520 = T₁₃₀₁ + T₁₃₀₂ + ... + T₁₃₃₅.

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

It is a junction number, because it is equal to n+sod(n) for n = 30424492 and 30424501.

It is not an unprimeable number, because it can be changed into a prime (30424523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53759 + ... + 54321.

It is an arithmetic number, because the mean of its divisors is an integer number (1230930).

Almost surely, 2^30424520 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 30424520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39389760).

30424520 is an abundant number, since it is smaller than the sum of its proper divisors (48355000).

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

30424520 is a wasteful number, since it uses less digits than its factorization.

30424520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 770 counting only the distinct ones).

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

The square root of 30424520 is about 5515.8426373493. The cubic root of 30424520 is about 312.1820381906.

Adding to 30424520 its reverse (2542403), we get a palindrome (32966923).

The spelling of 30424520 in words is "thirty million, four hundred twenty-four thousand, five hundred twenty".