307238136 has 16 divisors (see below), whose sum is σ = 768095400. Its totient is φ = 102412704.

The previous prime is 307238131. The next prime is 307238137. The reversal of 307238136 is 631832703.

It is a junction number, because it is equal to n+sod(n) for n = 307238097 and 307238106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307238131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6400771 + ... + 6400818.

Almost surely, 2^307238136 is an apocalyptic number.

It is an amenable number.

307238136 is an abundant number, since it is smaller than the sum of its proper divisors (460857264).

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

307238136 is a wasteful number, since it uses less digits than its factorization.

307238136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12801598 (or 12801594 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 307238136 is about 17528.2097203337. The cubic root of 307238136 is about 674.7740522216.

The spelling of 307238136 in words is "three hundred seven million, two hundred thirty-eight thousand, one hundred thirty-six".