297420648 has 64 divisors (see below), whose sum is σ = 854555520. Its totient is φ = 84499200.

The previous prime is 297420631. The next prime is 297420649. The reversal of 297420648 is 846024792.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (297420649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25518 + ... + 35298.

It is an arithmetic number, because the mean of its divisors is an integer number (13352430).

Almost surely, 2^297420648 is an apocalyptic number.

297420648 is a gapful number since it is divisible by the number (28) 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 297420648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427277760).

297420648 is an abundant number, since it is smaller than the sum of its proper divisors (557134872).

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

297420648 is a wasteful number, since it uses less digits than its factorization.

297420648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9978 (or 9974 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 297420648 is about 17245.8878576894. The cubic root of 297420648 is about 667.5088660467.

The spelling of 297420648 in words is "two hundred ninety-seven million, four hundred twenty thousand, six hundred forty-eight".