30033420 has 96 divisors (see below), whose sum is σ = 88467456. Its totient is φ = 7603200.

The previous prime is 30033403. The next prime is 30033439. The reversal of 30033420 is 2433003.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30033420.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124500 + ... + 124740.

It is an arithmetic number, because the mean of its divisors is an integer number (921536).

Almost surely, 2^30033420 is an apocalyptic number.

30033420 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 30033420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44233728).

30033420 is an abundant number, since it is smaller than the sum of its proper divisors (58434036).

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

30033420 is a wasteful number, since it uses less digits than its factorization.

30033420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 349 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 30033420 is about 5480.2755405180. The cubic root of 30033420 is about 310.8385896771.

Adding to 30033420 its reverse (2433003), we get a palindrome (32466423).

The spelling of 30033420 in words is "thirty million, thirty-three thousand, four hundred twenty".