309482236 has 36 divisors (see below), whose sum is σ = 635029248. Its totient is φ = 131580288.

The previous prime is 309482221. The next prime is 309482237. The reversal of 309482236 is 632284903.

It is a junction number, because it is equal to n+sod(n) for n = 309482195 and 309482204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309482237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18676 + ... + 31108.

Almost surely, 2^309482236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 309482236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317514624).

309482236 is an abundant number, since it is smaller than the sum of its proper divisors (325547012).

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

309482236 is a wasteful number, since it uses less digits than its factorization.

309482236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12578 (or 12569 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 309482236 is about 17592.1072074951. The cubic root of 309482236 is about 676.4129422642.

The spelling of 309482236 in words is "three hundred nine million, four hundred eighty-two thousand, two hundred thirty-six".