309648285274276 has 81 divisors (see below), whose sum is σ = 592729961538729. Its totient is φ = 141478481040000.

The previous prime is 309648285274271. The next prime is 309648285274291. The reversal of 309648285274276 is 672472582846903.

The square root of 309648285274276 is 17596826.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 124895599948900 + 184752685325376 = 11175670^2 + 13592376^2 .

It is a super-2 number, since 2×309648285274276² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 309648285274199 and 309648285274208.

It is not an unprimeable number, because it can be changed into a prime (309648285274271) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 46209261726 + ... + 46209268426.

Almost surely, 2^{309648285274276} is an apocalyptic number.

309648285274276 is the 17596826-th square number.

It is an amenable number.

309648285274276 is a deficient number, since it is larger than the sum of its proper divisors (283081676264453).

309648285274276 is an frugal number, since it uses more digits than its factorization.

309648285274276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13634 (or 6817 counting only the distinct ones).

The product of its (nonzero) digits is 1950842880, while the sum is 73.

The spelling of 309648285274276 in words is "three hundred nine trillion, six hundred forty-eight billion, two hundred eighty-five million, two hundred seventy-four thousand, two hundred seventy-six".