297949920 has 144 divisors (see below), whose sum is σ = 962348688. Its totient is φ = 77486080.

The previous prime is 297949919. The next prime is 297949933. The reversal of 297949920 is 29949792.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1060180 + ... + 1060460.

It is an arithmetic number, because the mean of its divisors is an integer number (6682977).

Almost surely, 2^297949920 is an apocalyptic number.

297949920 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 297949920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481174344).

297949920 is an abundant number, since it is smaller than the sum of its proper divisors (664398768).

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

297949920 is a wasteful number, since it uses less digits than its factorization.

297949920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 338 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 297949920 is about 17261.2259124316. The cubic root of 297949920 is about 667.9045843613.

The spelling of 297949920 in words is "two hundred ninety-seven million, nine hundred forty-nine thousand, nine hundred twenty".