30450393 has 6 divisors (see below), whose sum is σ = 43983914. Its totient is φ = 20300256.

The previous prime is 30450379. The next prime is 30450397. The reversal of 30450393 is 39305403.

It can be written as a sum of positive squares in only one way, i.e., 28164249 + 2286144 = 5307^2 + 1512^2 .

It is not a de Polignac number, because 30450393 - 2¹³ = 30442201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30450397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1691680 + ... + 1691697.

Almost surely, 2^30450393 is an apocalyptic number.

It is an amenable number.

30450393 is a deficient number, since it is larger than the sum of its proper divisors (13533521).

30450393 is a wasteful number, since it uses less digits than its factorization.

30450393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383383 (or 3383380 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 27.

The square root of 30450393 is about 5518.1874741621. The cubic root of 30450393 is about 312.2705062790.

Adding to 30450393 its reverse (39305403), we get a palindrome (69755796).

The spelling of 30450393 in words is "thirty million, four hundred fifty thousand, three hundred ninety-three".