30481929 has 12 divisors (see below), whose sum is σ = 45548100. Its totient is φ = 19620384.

The previous prime is 30481907. The next prime is 30481931. The reversal of 30481929 is 92918403.

It can be written as a sum of positive squares in 2 ways, for example, as 5531904 + 24950025 = 2352^2 + 4995^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30481929 is a prime.

It is a super-2 number, since 2×30481929² = 1858295991122082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30481893 and 30481902.

It is not an unprimeable number, because it can be changed into a prime (30481949) 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 11 ways as a sum of consecutive naturals, for example, 58134 + ... + 58655.

It is an arithmetic number, because the mean of its divisors is an integer number (3795675).

Almost surely, 2^30481929 is an apocalyptic number.

It is an amenable number.

30481929 is a deficient number, since it is larger than the sum of its proper divisors (15066171).

30481929 is a wasteful number, since it uses less digits than its factorization.

30481929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116824 (or 116821 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 30481929 is about 5521.0441947153. The cubic root of 30481929 is about 312.3782702415.

The spelling of 30481929 in words is "thirty million, four hundred eighty-one thousand, nine hundred twenty-nine".