30093940 has 12 divisors (see below), whose sum is σ = 63197316. Its totient is φ = 12037568.

The previous prime is 30093887. The next prime is 30093949. The reversal of 30093940 is 4939003.

It can be written as a sum of positive squares in 2 ways, for example, as 9771876 + 20322064 = 3126^2 + 4508^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30093899 and 30093908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30093949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752329 + ... + 752368.

It is an arithmetic number, because the mean of its divisors is an integer number (5266443).

Almost surely, 2^30093940 is an apocalyptic number.

It is an amenable number.

30093940 is an abundant number, since it is smaller than the sum of its proper divisors (33103376).

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

30093940 is a wasteful number, since it uses less digits than its factorization.

30093940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504706 (or 1504704 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 30093940 is about 5485.7943818557. The cubic root of 30093940 is about 311.0472386828.

The spelling of 30093940 in words is "thirty million, ninety-three thousand, nine hundred forty".