30420504 has 48 divisors (see below), whose sum is σ = 83140200. Its totient is φ = 10047744.

The previous prime is 30420491. The next prime is 30420521. The reversal of 30420504 is 40502403.

It is a happy number.

It is a super-2 number, since 2×30420504² = 1850814127228032, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6267 + ... + 10005.

Almost surely, 2^30420504 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 30420504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41570100).

30420504 is an abundant number, since it is smaller than the sum of its proper divisors (52719696).

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

30420504 is a wasteful number, since it uses less digits than its factorization.

30420504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3864 (or 3857 counting only the distinct ones).

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

The square root of 30420504 is about 5515.4785830425. The cubic root of 30420504 is about 312.1683017019.

Adding to 30420504 its reverse (40502403), we get a palindrome (70922907).

The spelling of 30420504 in words is "thirty million, four hundred twenty thousand, five hundred four".