30860928 has 192 divisors, whose sum is σ = 105019200. Its totient is φ = 8515584.

The previous prime is 30860911. The next prime is 30860941. The reversal of 30860928 is 82906803.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a junction number, because it is equal to n+sod(n) for n = 30860892 and 30860901.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 346708 + ... + 346796.

It is an arithmetic number, because the mean of its divisors is an integer number (546975).

Almost surely, 2^30860928 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 30860928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52509600).

30860928 is an abundant number, since it is smaller than the sum of its proper divisors (74158272).

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

30860928 is a wasteful number, since it uses less digits than its factorization.

30860928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 30860928 is about 5555.2612899845. The cubic root of 30860928 is about 313.6675996157.

The spelling of 30860928 in words is "thirty million, eight hundred sixty thousand, nine hundred twenty-eight".