247901952 has 72 divisors (see below), whose sum is σ = 671086080. Its totient is φ = 81218560.

The previous prime is 247901917. The next prime is 247901957. The reversal of 247901952 is 259109742.

It is a super-2 number, since 2×247901952² = 122910755610820608, 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 247901952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247901957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42577 + ... + 48047.

It is an arithmetic number, because the mean of its divisors is an integer number (9320640).

Almost surely, 2^247901952 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 247901952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335543040).

247901952 is an abundant number, since it is smaller than the sum of its proper divisors (423184128).

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

247901952 is an equidigital number, since it uses as much as digits as its factorization.

247901952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5549 (or 5535 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 247901952 is about 15744.9024131622. The cubic root of 247901952 is about 628.1933222284.

The spelling of 247901952 in words is "two hundred forty-seven million, nine hundred one thousand, nine hundred fifty-two".