30255072 has 48 divisors (see below), whose sum is σ = 80151120. Its totient is φ = 9992192.

The previous prime is 30255067. The next prime is 30255073. The reversal of 30255072 is 27055203.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30255073) 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, 9454 + ... + 12242.

It is an arithmetic number, because the mean of its divisors is an integer number (1669815).

Almost surely, 2^30255072 is an apocalyptic number.

30255072 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 30255072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40075560).

30255072 is an abundant number, since it is smaller than the sum of its proper divisors (49896048).

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

30255072 is a wasteful number, since it uses less digits than its factorization.

30255072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915 (or 2907 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 30255072 is about 5500.4610715830. The cubic root of 30255072 is about 311.6013976141.

The spelling of 30255072 in words is "thirty million, two hundred fifty-five thousand, seventy-two".