30947796 has 72 divisors (see below), whose sum is σ = 88128768. Its totient is φ = 9072000.

The previous prime is 30947783. The next prime is 30947821. The reversal of 30947796 is 69774903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11016 + ... + 13536.

Almost surely, 2^30947796 is an apocalyptic number.

30947796 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 30947796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44064384).

30947796 is an abundant number, since it is smaller than the sum of its proper divisors (57180972).

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

30947796 is a wasteful number, since it uses less digits than its factorization.

30947796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2568 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 30947796 is about 5563.0743299007. The cubic root of 30947796 is about 313.9616299958.

The spelling of 30947796 in words is "thirty million, nine hundred forty-seven thousand, seven hundred ninety-six".