297240940 has 48 divisors (see below), whose sum is σ = 672376320. Its totient is φ = 110013120.

The previous prime is 297240913. The next prime is 297240941. The reversal of 297240940 is 49042792.

It is a self number, because there is not a number n which added to its sum of digits gives 297240940.

It is not an unprimeable number, because it can be changed into a prime (297240941) 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, 7245 + ... + 25435.

It is an arithmetic number, because the mean of its divisors is an integer number (14007840).

Almost surely, 2^297240940 is an apocalyptic number.

297240940 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 297240940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336188160).

297240940 is an abundant number, since it is smaller than the sum of its proper divisors (375135380).

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

297240940 is a wasteful number, since it uses less digits than its factorization.

297240940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18262 (or 18260 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 297240940 is about 17240.6769008644. The cubic root of 297240940 is about 667.3743978534.

The spelling of 297240940 in words is "two hundred ninety-seven million, two hundred forty thousand, nine hundred forty".