247131072 has 84 divisors (see below), whose sum is σ = 710616816. Its totient is φ = 82114560.

The previous prime is 247131037. The next prime is 247131077. The reversal of 247131072 is 270131742.

It is a happy number.

It is a super-2 number, since 2×247131072² = 122147533495738368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247131077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 280072 + ... + 280952.

It is an arithmetic number, because the mean of its divisors is an integer number (8459724).

Almost surely, 2^247131072 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 247131072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355308408).

247131072 is an abundant number, since it is smaller than the sum of its proper divisors (463485744).

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

247131072 is a wasteful number, since it uses less digits than its factorization.

247131072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 247131072 is about 15720.4030482682. The cubic root of 247131072 is about 627.5414993480.

The spelling of 247131072 in words is "two hundred forty-seven million, one hundred thirty-one thousand, seventy-two".