297898140 has 48 divisors (see below), whose sum is σ = 883183392. Its totient is φ = 74766336.

The previous prime is 297898129. The next prime is 297898163. The reversal of 297898140 is 41898792.

It is a self number, because there is not a number n which added to its sum of digits gives 297898140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145009 + ... + 147048.

It is an arithmetic number, because the mean of its divisors is an integer number (18399654).

Almost surely, 2^297898140 is an apocalyptic number.

297898140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

297898140 is an abundant number, since it is smaller than the sum of its proper divisors (585285252).

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

297898140 is a wasteful number, since it uses less digits than its factorization.

297898140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292086 (or 292084 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 297898140 is about 17259.7259537920. The cubic root of 297898140 is about 667.8658909427.

The spelling of 297898140 in words is "two hundred ninety-seven million, eight hundred ninety-eight thousand, one hundred forty".