30825216 has 108 divisors (see below), whose sum is σ = 94224312. Its totient is φ = 9658368.

The previous prime is 30825211. The next prime is 30825229. The reversal of 30825216 is 61252803.

It is a self number, because there is not a number n which added to its sum of digits gives 30825216.

It is not an unprimeable number, because it can be changed into a prime (30825211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38775 + ... + 39561.

Almost surely, 2^30825216 is an apocalyptic number.

30825216 is a gapful number since it is divisible by the number (36) 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 30825216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47112156).

30825216 is an abundant number, since it is smaller than the sum of its proper divisors (63399096).

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

30825216 is a wasteful number, since it uses less digits than its factorization.

30825216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 30825216 is about 5552.0461093186. The cubic root of 30825216 is about 313.5465617678.

The spelling of 30825216 in words is "thirty million, eight hundred twenty-five thousand, two hundred sixteen".