247897152 has 112 divisors (see below), whose sum is σ = 746760000. Its totient is φ = 80593920.

The previous prime is 247897121. The next prime is 247897157. The reversal of 247897152 is 251798742.

It is a happy number.

247897152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247897152² = 122905995939422208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247897098 and 247897107.

It is not an unprimeable number, because it can be changed into a prime (247897157) 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, 69099 + ... + 72597.

It is an arithmetic number, because the mean of its divisors is an integer number (6667500).

Almost surely, 2^247897152 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 247897152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373380000).

247897152 is an abundant number, since it is smaller than the sum of its proper divisors (498862848).

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

247897152 is a wasteful number, since it uses less digits than its factorization.

247897152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561 (or 3545 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 247897152 is about 15744.7499821369. The cubic root of 247897152 is about 628.1892677391.

The spelling of 247897152 in words is "two hundred forty-seven million, eight hundred ninety-seven thousand, one hundred fifty-two".