247445472 has 192 divisors, whose sum is σ = 730404864. Its totient is φ = 72990720.

The previous prime is 247445461. The next prime is 247445609. The reversal of 247445472 is 274544742.

It is a super-2 number, since 2×247445472² = 122458523226605568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247445472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3389628 + ... + 3389700.

It is an arithmetic number, because the mean of its divisors is an integer number (3804192).

Almost surely, 2^247445472 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 247445472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365202432).

247445472 is an abundant number, since it is smaller than the sum of its proper divisors (482959392).

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

247445472 is a wasteful number, since it uses less digits than its factorization.

247445472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 193 counting only the distinct ones).

The product of its digits is 250880, while the sum is 39.

The square root of 247445472 is about 15730.3996134873. The cubic root of 247445472 is about 627.8075058804.

The spelling of 247445472 in words is "two hundred forty-seven million, four hundred forty-five thousand, four hundred seventy-two".