30140929 has 12 divisors (see below), whose sum is σ = 37759764. Its totient is φ = 23847264.

The previous prime is 30140911. The next prime is 30140933. The reversal of 30140929 is 92904103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15586704 + 14554225 = 3948^2 + 3815^2 .

It is not a de Polignac number, because 30140929 - 2⁷ = 30140801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30140897 and 30140906.

It is not an unprimeable number, because it can be changed into a prime (30140909) 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, 23022 + ... + 24295.

It is an arithmetic number, because the mean of its divisors is an integer number (3146647).

Almost surely, 2^30140929 is an apocalyptic number.

It is an amenable number.

30140929 is a deficient number, since it is larger than the sum of its proper divisors (7618835).

30140929 is a wasteful number, since it uses less digits than its factorization.

30140929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47344 (or 47337 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 30140929 is about 5490.0755003916. The cubic root of 30140929 is about 311.2090453256.

The spelling of 30140929 in words is "thirty million, one hundred forty thousand, nine hundred twenty-nine".