297128480 has 96 divisors (see below), whose sum is σ = 775837440. Its totient is φ = 106629120.

The previous prime is 297128473. The next prime is 297128483. The reversal of 297128480 is 84821792.

It is a super-2 number, since 2×297128480² = 176570667254220800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (297128483) 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, 137972 + ... + 140108.

It is an arithmetic number, because the mean of its divisors is an integer number (8081640).

Almost surely, 2^297128480 is an apocalyptic number.

297128480 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 297128480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387918720).

297128480 is an abundant number, since it is smaller than the sum of its proper divisors (478708960).

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

297128480 is a wasteful number, since it uses less digits than its factorization.

297128480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242 (or 2234 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 297128480 is about 17237.4151194429. The cubic root of 297128480 is about 667.2902210325.

The spelling of 297128480 in words is "two hundred ninety-seven million, one hundred twenty-eight thousand, four hundred eighty".