263201340 has 24 divisors (see below), whose sum is σ = 736963920. Its totient is φ = 70187008.

The previous prime is 263201329. The next prime is 263201353. The reversal of 263201340 is 43102362.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2193285 + ... + 2193404.

It is an arithmetic number, because the mean of its divisors is an integer number (30706830).

Almost surely, 2^263201340 is an apocalyptic number.

263201340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263201340 is an abundant number, since it is smaller than the sum of its proper divisors (473762580).

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

263201340 is a wasteful number, since it uses less digits than its factorization.

263201340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4386701 (or 4386699 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 263201340 is about 16223.4811307561. The cubic root of 263201340 is about 640.8593112038.

The spelling of 263201340 in words is "two hundred sixty-three million, two hundred one thousand, three hundred forty".