30402093 has 4 divisors (see below), whose sum is σ = 40536128. Its totient is φ = 20268060.

The previous prime is 30402083. The next prime is 30402101. The reversal of 30402093 is 39020403.

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.

It is not a de Polignac number, because 30402093 - 2⁴ = 30402077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30402013) 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, 5067013 + ... + 5067018.

It is an arithmetic number, because the mean of its divisors is an integer number (10134032).

Almost surely, 2^30402093 is an apocalyptic number.

It is an amenable number.

30402093 is a deficient number, since it is larger than the sum of its proper divisors (10134035).

30402093 is a wasteful number, since it uses less digits than its factorization.

30402093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10134034.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 30402093 is about 5513.8093002932. The cubic root of 30402093 is about 312.1053124929.

Adding to 30402093 its reverse (39020403), we get a palindrome (69422496).

The spelling of 30402093 in words is "thirty million, four hundred two thousand, ninety-three".