30005424 has 40 divisors (see below), whose sum is σ = 86127920. Its totient is φ = 10001664.

The previous prime is 30005387. The next prime is 30005429. The reversal of 30005424 is 42450003.

It is a happy number.

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 = 30005397 and 30005406.

It is not an unprimeable number, because it can be changed into a prime (30005429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34297 + ... + 35160.

It is an arithmetic number, because the mean of its divisors is an integer number (2153198).

Almost surely, 2^30005424 is an apocalyptic number.

It is an amenable number.

30005424 is an abundant number, since it is smaller than the sum of its proper divisors (56122496).

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

30005424 is a wasteful number, since it uses less digits than its factorization.

30005424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69474 (or 69462 counting only the distinct ones).

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

The square root of 30005424 is about 5477.7206938653. The cubic root of 30005424 is about 310.7419757215.

Adding to 30005424 its reverse (42450003), we get a palindrome (72455427).

The spelling of 30005424 in words is "thirty million, five thousand, four hundred twenty-four".