263940632 has 8 divisors (see below), whose sum is σ = 494888700. Its totient is φ = 131970312.

The previous prime is 263940619. The next prime is 263940637. The reversal of 263940632 is 236049362.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 263940592 and 263940601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263940637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16496282 + ... + 16496297.

Almost surely, 2^263940632 is an apocalyptic number.

It is an amenable number.

263940632 is a deficient number, since it is larger than the sum of its proper divisors (230948068).

263940632 is a wasteful number, since it uses less digits than its factorization.

263940632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32992585 (or 32992581 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 35.

The square root of 263940632 is about 16246.2497826421. The cubic root of 263940632 is about 641.4587752986.

Adding to 263940632 its reverse (236049362), we get a palindrome (499989994).

The spelling of 263940632 in words is "two hundred sixty-three million, nine hundred forty thousand, six hundred thirty-two".