30928716 has 120 divisors (see below), whose sum is σ = 99607200. Its totient is φ = 8149248.

The previous prime is 30928699. The next prime is 30928717. The reversal of 30928716 is 61782903.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (30928717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 28960 + ... + 30008.

It is an arithmetic number, because the mean of its divisors is an integer number (830060).

Almost surely, 2^30928716 is an apocalyptic number.

30928716 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 30928716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49803600).

30928716 is an abundant number, since it is smaller than the sum of its proper divisors (68678484).

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

30928716 is a wasteful number, since it uses less digits than its factorization.

30928716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 30928716 is about 5561.3591863860. The cubic root of 30928716 is about 313.8970953044.

The spelling of 30928716 in words is "thirty million, nine hundred twenty-eight thousand, seven hundred sixteen".