30928309038 has 24 divisors (see below), whose sum is σ = 73103276376. Its totient is φ = 9372214800.

The previous prime is 30928309037. The next prime is 30928309039. The reversal of 30928309038 is 83090382903.

30928309038 is a `hidden beast` number, since 309 + 2 + 8 + 309 + 0 + 38 = 666.

It is an interprime number because it is at equal distance from previous prime (30928309037) and next prime (30928309039).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30928308984 and 30928309002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30928309037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78101593 + ... + 78101988.

It is an arithmetic number, because the mean of its divisors is an integer number (3045969849).

Almost surely, 2^30928309038 is an apocalyptic number.

30928309038 is an abundant number, since it is smaller than the sum of its proper divisors (42174967338).

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

30928309038 is a wasteful number, since it uses less digits than its factorization.

30928309038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156203600 (or 156203597 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 30928309038 in words is "thirty billion, nine hundred twenty-eight million, three hundred nine thousand, thirty-eight".