247063840 has 96 divisors (see below), whose sum is σ = 624093120. Its totient is φ = 92150784.

The previous prime is 247063823. The next prime is 247063841. The reversal of 247063840 is 48360742.

247063840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247063840² = 122081082071091200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247063796 and 247063805.

It is not an unprimeable number, because it can be changed into a prime (247063841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203074 + ... + 204286.

It is an arithmetic number, because the mean of its divisors is an integer number (6500970).

Almost surely, 2^247063840 is an apocalyptic number.

247063840 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 247063840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312046560).

247063840 is an abundant number, since it is smaller than the sum of its proper divisors (377029280).

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

247063840 is a wasteful number, since it uses less digits than its factorization.

247063840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314 (or 1306 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 247063840 is about 15718.2645352469. The cubic root of 247063840 is about 627.4845866385.

The spelling of 247063840 in words is "two hundred forty-seven million, sixty-three thousand, eight hundred forty".