247873536 has 135 divisors (see below), whose sum is σ = 733948033. Its totient is φ = 80609280.

The previous prime is 247873519. The next prime is 247873537. The reversal of 247873536 is 635378742.

The square root of 247873536 is 15744.

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

247873536 is a `hidden beast` number, since 2 + 47 + 8 + 73 + 536 = 666.

247873536 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 235929600 = 3456^2 + 15360^2 .

It is a super-2 number, since 2×247873536² = 122882579698286592, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 247873491 and 247873500.

It is not an unprimeable number, because it can be changed into a prime (247873537) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6045676 + ... + 6045716.

Almost surely, 2^247873536 is an apocalyptic number.

247873536 is the 15744-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247873536

247873536 is an abundant number, since it is smaller than the sum of its proper divisors (486074497).

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

247873536 is an frugal number, since it uses more digits than its factorization.

247873536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 46 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The cubic root of 247873536 is about 628.1693188897.

The spelling of 247873536 in words is "two hundred forty-seven million, eight hundred seventy-three thousand, five hundred thirty-six".