267978340 has 24 divisors (see below), whose sum is σ = 643148352. Its totient is φ = 91878240.

The previous prime is 267978329. The next prime is 267978343. The reversal of 267978340 is 43879762.

It is not an unprimeable number, because it can be changed into a prime (267978343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 956926 + ... + 957205.

It is an arithmetic number, because the mean of its divisors is an integer number (26797848).

Almost surely, 2^267978340 is an apocalyptic number.

267978340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

267978340 is an abundant number, since it is smaller than the sum of its proper divisors (375170012).

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

267978340 is a wasteful number, since it uses less digits than its factorization.

267978340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1914147 (or 1914145 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The square root of 267978340 is about 16370.0439828365. The cubic root of 267978340 is about 644.7132030247.

The spelling of 267978340 in words is "two hundred sixty-seven million, nine hundred seventy-eight thousand, three hundred forty".