30788082 has 72 divisors (see below), whose sum is σ = 74938500. Its totient is φ = 9120384.

The previous prime is 30788081. The next prime is 30788119. The reversal of 30788082 is 28088703.

It can be written as a sum of positive squares in 6 ways, for example, as 7834401 + 22953681 = 2799^2 + 4791^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (30788081) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 88044 + ... + 88392.

Almost surely, 2^30788082 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30788082, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37469250).

30788082 is an abundant number, since it is smaller than the sum of its proper divisors (44150418).

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

30788082 is a wasteful number, since it uses less digits than its factorization.

30788082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 30788082 is about 5548.7009290464. The cubic root of 30788082 is about 313.4206051857.

The spelling of 30788082 in words is "thirty million, seven hundred eighty-eight thousand, eighty-two".