30880028 has 12 divisors (see below), whose sum is σ = 54257112. Its totient is φ = 15378000.

The previous prime is 30880021. The next prime is 30880033. The reversal of 30880028 is 82008803.

It is a super-2 number, since 2×30880028² = 1907152258561568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30880021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 14375 + ... + 16382.

It is an arithmetic number, because the mean of its divisors is an integer number (4521426).

Almost surely, 2^30880028 is an apocalyptic number.

It is an amenable number.

30880028 is a deficient number, since it is larger than the sum of its proper divisors (23377084).

30880028 is a wasteful number, since it uses less digits than its factorization.

30880028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31012 (or 31010 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 30880028 is about 5556.9801151345. The cubic root of 30880028 is about 313.7322964778.

The spelling of 30880028 in words is "thirty million, eight hundred eighty thousand, twenty-eight".