30734393 has 4 divisors (see below), whose sum is σ = 30764688. Its totient is φ = 30704100.

The previous prime is 30734369. The next prime is 30734399. The reversal of 30734393 is 39343703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39343703 = 7 ⋅5620529.

It is a cyclic number.

It is not a de Polignac number, because 30734393 - 2¹⁸ = 30472249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30734399) 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, 13571 + ... + 15672.

It is an arithmetic number, because the mean of its divisors is an integer number (7691172).

Almost surely, 2^30734393 is an apocalyptic number.

It is an amenable number.

30734393 is a deficient number, since it is larger than the sum of its proper divisors (30295).

30734393 is a wasteful number, since it uses less digits than its factorization.

30734393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30294.

The product of its (nonzero) digits is 20412, while the sum is 32.

The square root of 30734393 is about 5543.8608388018. The cubic root of 30734393 is about 313.2383157140.

The spelling of 30734393 in words is "thirty million, seven hundred thirty-four thousand, three hundred ninety-three".