30021152 has 48 divisors (see below), whose sum is σ = 67963392. Its totient is φ = 12787200.

The previous prime is 30021151. The next prime is 30021157. The reversal of 30021152 is 25112003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (30021151) 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, 49652 + ... + 50252.

It is an arithmetic number, because the mean of its divisors is an integer number (1415904).

Almost surely, 2^30021152 is an apocalyptic number.

30021152 is a gapful number since it is divisible by the number (32) 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 30021152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33981696).

30021152 is an abundant number, since it is smaller than the sum of its proper divisors (37942240).

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

30021152 is a wasteful number, since it uses less digits than its factorization.

30021152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 30021152 is about 5479.1561394069. The cubic root of 30021152 is about 310.7962603080.

Adding to 30021152 its reverse (25112003), we get a palindrome (55133155).

The spelling of 30021152 in words is "thirty million, twenty-one thousand, one hundred fifty-two".