30773028 has 96 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 8461440.

The previous prime is 30773023. The next prime is 30773047. The reversal of 30773028 is 82037703.

It is a junction number, because it is equal to n+sod(n) for n = 30772986 and 30773004.

It is not an unprimeable number, because it can be changed into a prime (30773021) 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 31 ways as a sum of consecutive naturals, for example, 135451 + ... + 135677.

It is an arithmetic number, because the mean of its divisors is an integer number (893760).

Almost surely, 2^30773028 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 30773028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42900480).

30773028 is an abundant number, since it is smaller than the sum of its proper divisors (55027932).

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

30773028 is a wasteful number, since it uses less digits than its factorization.

30773028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 30773028 is about 5547.3442294489. The cubic root of 30773028 is about 313.3695139550.

It can be divided in two parts, 3077 and 3028, that added together give a triangular number (6105 = T₁₁₀).

The spelling of 30773028 in words is "thirty million, seven hundred seventy-three thousand, twenty-eight".