263428366 has 8 divisors (see below), whose sum is σ = 398768040. Its totient is φ = 130505688.

The previous prime is 263428357. The next prime is 263428367. The reversal of 263428366 is 663824362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263428367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603976 + ... + 604411.

It is an arithmetic number, because the mean of its divisors is an integer number (49846005).

Almost surely, 2^263428366 is an apocalyptic number.

263428366 is a deficient number, since it is larger than the sum of its proper divisors (135339674).

263428366 is a wasteful number, since it uses less digits than its factorization.

263428366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208498.

The product of its digits is 248832, while the sum is 40.

The square root of 263428366 is about 16230.4764563459. The cubic root of 263428366 is about 641.0435173511.

The spelling of 263428366 in words is "two hundred sixty-three million, four hundred twenty-eight thousand, three hundred sixty-six".