247322240 has 192 divisors, whose sum is σ = 695109600. Its totient is φ = 83220480.

The previous prime is 247322233. The next prime is 247322267. The reversal of 247322240 is 42223742.

It is a super-2 number, since 2×247322240² = 122336580797235200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5751659 + ... + 5751701.

Almost surely, 2^247322240 is an apocalyptic number.

247322240 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 247322240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347554800).

247322240 is an abundant number, since it is smaller than the sum of its proper divisors (447787360).

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

247322240 is a wasteful number, since it uses less digits than its factorization.

247322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 247322240 is about 15726.4821241115. The cubic root of 247322240 is about 627.7032690147.

Adding to 247322240 its reverse (42223742), we get a palindrome (289545982).

The spelling of 247322240 in words is "two hundred forty-seven million, three hundred twenty-two thousand, two hundred forty".