247996 has 24 divisors (see below), whose sum is σ = 526176. Its totient is φ = 99840.

The previous prime is 247993. The next prime is 247997. The reversal of 247996 is 699742.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216 + ... + 736.

It is an arithmetic number, because the mean of its divisors is an integer number (21924).

247996 is a Friedman number, since it can be written as 476*(9+2^9), using all its digits and the basic arithmetic operations.

2²⁴⁷⁹⁹⁶ 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 247996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263088).

247996 is an abundant number, since it is smaller than the sum of its proper divisors (278180).

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

247996 is a wasteful number, since it uses less digits than its factorization.

247996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549 (or 547 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 247996 is about 497.9919678067. The cubic root of 247996 is about 62.8272752631.

Subtracting from 247996 its product of digits (27216), we obtain a triangular number (220780 = T₆₆₄).

The spelling of 247996 in words is "two hundred forty-seven thousand, nine hundred ninety-six".