247386216 has 128 divisors (see below), whose sum is σ = 775526400. Its totient is φ = 63886080.

The previous prime is 247386199. The next prime is 247386287. The reversal of 247386216 is 612683742.

It is a happy number.

It is a super-2 number, since 2×247386216² = 122399879733597312, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 485770 + ... + 486278.

It is an arithmetic number, because the mean of its divisors is an integer number (6058800).

Almost surely, 2^247386216 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 247386216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387763200).

247386216 is an abundant number, since it is smaller than the sum of its proper divisors (528140184).

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

247386216 is a wasteful number, since it uses less digits than its factorization.

247386216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799 (or 795 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 247386216 is about 15728.5160139156. The cubic root of 247386216 is about 627.7573879949.

The spelling of 247386216 in words is "two hundred forty-seven million, three hundred eighty-six thousand, two hundred sixteen".