30773428 has 12 divisors (see below), whose sum is σ = 61546912. Its totient is φ = 13188600.

The previous prime is 30773419. The next prime is 30773429. The reversal of 30773428 is 82437703.

30773428 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 30773393 and 30773402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30773429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 549498 + ... + 549553.

Almost surely, 2^30773428 is an apocalyptic number.

It is an amenable number.

30773428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

30773428 is a wasteful number, since it uses less digits than its factorization.

30773428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099062 (or 1099060 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 30773428 is about 5547.3802826199. The cubic root of 30773428 is about 313.3708717161.

The spelling of 30773428 in words is "thirty million, seven hundred seventy-three thousand, four hundred twenty-eight".