30946393 has 16 divisors (see below), whose sum is σ = 33269760. Its totient is φ = 28728000.

The previous prime is 30946387. The next prime is 30946397. The reversal of 30946393 is 39364903.

It is a cyclic number.

It is not a de Polignac number, because 30946393 - 2²¹ = 28849241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30946397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161928 + ... + 162118.

It is an arithmetic number, because the mean of its divisors is an integer number (2079360).

Almost surely, 2^30946393 is an apocalyptic number.

It is an amenable number.

30946393 is a deficient number, since it is larger than the sum of its proper divisors (2323367).

30946393 is a wasteful number, since it uses less digits than its factorization.

30946393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 52488, while the sum is 37.

The square root of 30946393 is about 5562.9482291317. The cubic root of 30946393 is about 313.9568855026.

The spelling of 30946393 in words is "thirty million, nine hundred forty-six thousand, three hundred ninety-three".