263198040 has 64 divisors (see below), whose sum is σ = 902396160. Its totient is φ = 60159360.

The previous prime is 263198017. The next prime is 263198071. The reversal of 263198040 is 40891362.

It is a junction number, because it is equal to n+sod(n) for n = 263197992 and 263198010.

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 15 ways as a sum of consecutive naturals, for example, 155826 + ... + 157505.

It is an arithmetic number, because the mean of its divisors is an integer number (14099940).

Almost surely, 2^263198040 is an apocalyptic number.

263198040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263198040 is an abundant number, since it is smaller than the sum of its proper divisors (639198120).

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

263198040 is a wasteful number, since it uses less digits than its factorization.

263198040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313352 (or 313348 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 263198040 is about 16223.3794260012. The cubic root of 263198040 is about 640.8566328429.

The spelling of 263198040 in words is "two hundred sixty-three million, one hundred ninety-eight thousand, forty".