309201396 has 48 divisors (see below), whose sum is σ = 830860800. Its totient is φ = 87665760.

The previous prime is 309201353. The next prime is 309201407. The reversal of 309201396 is 693102903.

It is a super-3 number, since 3×309201396³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3046 + ... + 25053.

It is an arithmetic number, because the mean of its divisors is an integer number (17309600).

Almost surely, 2^309201396 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 309201396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (415430400).

309201396 is an abundant number, since it is smaller than the sum of its proper divisors (521659404).

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

309201396 is a wasteful number, since it uses less digits than its factorization.

309201396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28244 (or 28242 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 309201396 is about 17584.1234072103. The cubic root of 309201396 is about 676.2082764508.

The spelling of 309201396 in words is "three hundred nine million, two hundred one thousand, three hundred ninety-six".