263324440 has 16 divisors (see below), whose sum is σ = 592480080. Its totient is φ = 105329760.

The previous prime is 263324419. The next prime is 263324483. The reversal of 263324440 is 44423362.

It is a junction number, because it is equal to n+sod(n) for n = 263324399 and 263324408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3291516 + ... + 3291595.

It is an arithmetic number, because the mean of its divisors is an integer number (37030005).

Almost surely, 2^263324440 is an apocalyptic number.

263324440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263324440 is an abundant number, since it is smaller than the sum of its proper divisors (329155640).

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

263324440 is a wasteful number, since it uses less digits than its factorization.

263324440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583122 (or 6583118 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 263324440 is about 16227.2745709192. The cubic root of 263324440 is about 640.9592061935.

The spelling of 263324440 in words is "two hundred sixty-three million, three hundred twenty-four thousand, four hundred forty".