297489920 has 160 divisors (see below), whose sum is σ = 878568768. Its totient is φ = 94076928.

The previous prime is 297489877. The next prime is 297489937. The reversal of 297489920 is 29984792.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232322 + ... + 233598.

Almost surely, 2^297489920 is an apocalyptic number.

297489920 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 297489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439284384).

297489920 is an abundant number, since it is smaller than the sum of its proper divisors (581078848).

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

297489920 is a wasteful number, since it uses less digits than its factorization.

297489920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 297489920 is about 17247.8961035832. The cubic root of 297489920 is about 667.5606850053.

The spelling of 297489920 in words is "two hundred ninety-seven million, four hundred eighty-nine thousand, nine hundred twenty".