247040000 has 120 divisors (see below), whose sum is σ = 620449830. Its totient is φ = 98304000.

The previous prime is 247039963. The next prime is 247040011. The reversal of 247040000 is 40742.

It can be written as a sum of positive squares in 5 ways, for example, as 173056 + 246866944 = 416^2 + 15712^2 .

It is a super-2 number, since 2×247040000² = 122057523200000000, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1279904 + ... + 1280096.

Almost surely, 2^247040000 is an apocalyptic number.

247040000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 247040000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310224915).

247040000 is an abundant number, since it is smaller than the sum of its proper divisors (373409830).

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

247040000 is an frugal number, since it uses more digits than its factorization.

247040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 247040000 is about 15717.5061635108. The cubic root of 247040000 is about 627.4644033076.

Adding to 247040000 its reverse (40742), we get a palindrome (247080742).

The spelling of 247040000 in words is "two hundred forty-seven million, forty thousand".