30218794 has 4 divisors (see below), whose sum is σ = 45328194. Its totient is φ = 15109396.

The previous prime is 30218779. The next prime is 30218813. The reversal of 30218794 is 49781203.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 29019769 + 1199025 = 5387^2 + 1095^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7554697 + ... + 7554700.

Almost surely, 2^30218794 is an apocalyptic number.

30218794 is a deficient number, since it is larger than the sum of its proper divisors (15109400).

30218794 is a wasteful number, since it uses less digits than its factorization.

30218794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15109399.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 30218794 is about 5497.1623588903. The cubic root of 30218794 is about 311.4768036647.

Adding to 30218794 its reverse (49781203), we get a palindrome (79999997).

The spelling of 30218794 in words is "thirty million, two hundred eighteen thousand, seven hundred ninety-four".