30421824 has 84 divisors (see below), whose sum is σ = 85014816. Its totient is φ = 9582848.

The previous prime is 30421817. The next prime is 30421849. The reversal of 30421824 is 42812403.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 30421794 and 30421803.

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, 366487 + ... + 366569.

Almost surely, 2^30421824 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 30421824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42507408).

30421824 is an abundant number, since it is smaller than the sum of its proper divisors (54592992).

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

30421824 is an equidigital number, since it uses as much as digits as its factorization.

30421824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 111 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 30421824 is about 5515.5982449776. The cubic root of 30421824 is about 312.1728168166.

The spelling of 30421824 in words is "thirty million, four hundred twenty-one thousand, eight hundred twenty-four".