30621696 has 120 divisors (see below), whose sum is σ = 94368960. Its totient is φ = 8650752.

The previous prime is 30621683. The next prime is 30621713. The reversal of 30621696 is 69612603.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344020 + ... + 344108.

It is an arithmetic number, because the mean of its divisors is an integer number (786408).

Almost surely, 2^30621696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30621696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47184480).

30621696 is an abundant number, since it is smaller than the sum of its proper divisors (63747264).

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

30621696 is an frugal number, since it uses more digits than its factorization.

30621696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 30621696 is about 5533.6873782316. The cubic root of 30621696 is about 312.8549856133.

The spelling of 30621696 in words is "thirty million, six hundred twenty-one thousand, six hundred ninety-six".