30072393 has 24 divisors (see below), whose sum is σ = 47927880. Its totient is φ = 18051840.

The previous prime is 30072389. The next prime is 30072397. The reversal of 30072393 is 39327003.

It is an interprime number because it is at equal distance from previous prime (30072389) and next prime (30072397).

It can be written as a sum of positive squares in 4 ways, for example, as 944784 + 29127609 = 972^2 + 5397^2 .

It is not a de Polignac number, because 30072393 - 2² = 30072389 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30072397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1663 + ... + 7931.

It is an arithmetic number, because the mean of its divisors is an integer number (1996995).

Almost surely, 2^30072393 is an apocalyptic number.

It is an amenable number.

30072393 is a deficient number, since it is larger than the sum of its proper divisors (17855487).

30072393 is a wasteful number, since it uses less digits than its factorization.

30072393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6329 (or 6326 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 27.

The square root of 30072393 is about 5483.8301396013. The cubic root of 30072393 is about 310.9729852501.

Adding to 30072393 its reverse (39327003), we get a palindrome (69399396).

The spelling of 30072393 in words is "thirty million, seventy-two thousand, three hundred ninety-three".