30928248 has 96 divisors (see below), whose sum is σ = 91203840. Its totient is φ = 9411840.

The previous prime is 30928241. The next prime is 30928259. The reversal of 30928248 is 84282903.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30928241) 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 23 ways as a sum of consecutive naturals, for example, 161833 + ... + 162023.

It is an arithmetic number, because the mean of its divisors is an integer number (950040).

Almost surely, 2^30928248 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 30928248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45601920).

30928248 is an abundant number, since it is smaller than the sum of its proper divisors (60275592).

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

30928248 is a wasteful number, since it uses less digits than its factorization.

30928248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 30928248 is about 5561.3171101817. The cubic root of 30928248 is about 313.8955120446.

The spelling of 30928248 in words is "thirty million, nine hundred twenty-eight thousand, two hundred forty-eight".