30307236 has 12 divisors (see below), whose sum is σ = 70716912. Its totient is φ = 10102408.

The previous prime is 30307229. The next prime is 30307247. The reversal of 30307236 is 63270303.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1262790 + ... + 1262813.

It is an arithmetic number, because the mean of its divisors is an integer number (5893076).

Almost surely, 2^30307236 is an apocalyptic number.

It is an amenable number.

30307236 is an abundant number, since it is smaller than the sum of its proper divisors (40409676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30307236 is a wasteful number, since it uses less digits than its factorization.

30307236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525610 (or 2525608 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 24.

The square root of 30307236 is about 5505.2008137760. The cubic root of 30307236 is about 311.7803763391.

Adding to 30307236 its reverse (63270303), we get a palindrome (93577539).

The spelling of 30307236 in words is "thirty million, three hundred seven thousand, two hundred thirty-six".