30290236 has 12 divisors (see below), whose sum is σ = 53211312. Its totient is φ = 15087008.

The previous prime is 30290219. The next prime is 30290251. The reversal of 30290236 is 63209203.

It is a self number, because there is not a number n which added to its sum of digits gives 30290236.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13345 + ... + 15448.

It is an arithmetic number, because the mean of its divisors is an integer number (4434276).

Almost surely, 2^30290236 is an apocalyptic number.

It is an amenable number.

30290236 is a deficient number, since it is larger than the sum of its proper divisors (22921076).

30290236 is a wasteful number, since it uses less digits than its factorization.

30290236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29060 (or 29058 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30290236 is about 5503.6566026597. The cubic root of 30290236 is about 311.7220705963.

Adding to 30290236 its reverse (63209203), we get a palindrome (93499439).

The spelling of 30290236 in words is "thirty million, two hundred ninety thousand, two hundred thirty-six".