30478983 has 32 divisors (see below), whose sum is σ = 45219840. Its totient is φ = 18182880.

The previous prime is 30478961. The next prime is 30478997. The reversal of 30478983 is 38987403.

It is not a de Polignac number, because 30478983 - 2⁶ = 30478919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30478183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82866 + ... + 83232.

It is an arithmetic number, because the mean of its divisors is an integer number (1413120).

Almost surely, 2^30478983 is an apocalyptic number.

30478983 is a deficient number, since it is larger than the sum of its proper divisors (14740857).

30478983 is a wasteful number, since it uses less digits than its factorization.

30478983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 30478983 is about 5520.7773909115. Note that the first 3 decimals coincide. The cubic root of 30478983 is about 312.3682063986.

The spelling of 30478983 in words is "thirty million, four hundred seventy-eight thousand, nine hundred eighty-three".