297487872 has 120 divisors (see below), whose sum is σ = 936781560. Its totient is φ = 90132480.

The previous prime is 297487871. The next prime is 297487901. The reversal of 297487872 is 278784792.

297487872 is a `hidden beast` number, since 2 + 97 + 487 + 8 + 72 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (297487871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47754 + ... + 53622.

It is an arithmetic number, because the mean of its divisors is an integer number (7806513).

Almost surely, 2^297487872 is an apocalyptic number.

297487872 is a gapful number since it is divisible by the number (22) 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 297487872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468390780).

297487872 is an abundant number, since it is smaller than the sum of its proper divisors (639293688).

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

297487872 is a wasteful number, since it uses less digits than its factorization.

297487872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5904 (or 5885 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 54.

The square root of 297487872 is about 17247.8367339212. The cubic root of 297487872 is about 667.5591531132.

The spelling of 297487872 in words is "two hundred ninety-seven million, four hundred eighty-seven thousand, eight hundred seventy-two".