30383028 has 36 divisors (see below), whose sum is σ = 82710628. Its totient is φ = 9348480.

The previous prime is 30383027. The next prime is 30383057. The reversal of 30383028 is 82038303.

It can be written as a sum of positive squares in 2 ways, for example, as 2377764 + 28005264 = 1542^2 + 5292^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 30382992 and 30383010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30383021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31993 + ... + 32928.

Almost surely, 2^30383028 is an apocalyptic number.

It is an amenable number.

30383028 is an abundant number, since it is smaller than the sum of its proper divisors (52327600).

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

30383028 is a wasteful number, since it uses less digits than its factorization.

30383028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64944 (or 64939 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 30383028 is about 5512.0801880960. The cubic root of 30383028 is about 312.0400589590.

The spelling of 30383028 in words is "thirty million, three hundred eighty-three thousand, twenty-eight".