30012293 has 4 divisors (see below), whose sum is σ = 31777740. Its totient is φ = 28246848.

The previous prime is 30012289. The next prime is 30012299. The reversal of 30012293 is 39221003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24433249 + 5579044 = 4943^2 + 2362^2 .

It is a cyclic number.

It is not a de Polignac number, because 30012293 - 2² = 30012289 is a prime.

It is a super-2 number, since 2×30012293² = 1801475462235698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30012299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882698 + ... + 882731.

It is an arithmetic number, because the mean of its divisors is an integer number (7944435).

Almost surely, 2^30012293 is an apocalyptic number.

It is an amenable number.

30012293 is a deficient number, since it is larger than the sum of its proper divisors (1765447).

30012293 is a wasteful number, since it uses less digits than its factorization.

30012293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765446.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 30012293 is about 5478.3476523492. The cubic root of 30012293 is about 310.7656861432.

Adding to 30012293 its reverse (39221003), we get a palindrome (69233296).

The spelling of 30012293 in words is "thirty million, twelve thousand, two hundred ninety-three".