263394630 has 48 divisors (see below), whose sum is σ = 697759920. Its totient is φ = 68912064.

The previous prime is 263394629. The next prime is 263394647. The reversal of 263394630 is 36493362.

263394630 is a `hidden beast` number, since 263 + 394 + 6 + 3 + 0 = 666.

It is a super-2 number, since 2×263394630² = 138753462225673800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22840 + ... + 32379.

It is an arithmetic number, because the mean of its divisors is an integer number (14536665).

Almost surely, 2^263394630 is an apocalyptic number.

263394630 is an abundant number, since it is smaller than the sum of its proper divisors (434365290).

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

263394630 is a wasteful number, since it uses less digits than its factorization.

263394630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55285 (or 55282 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The square root of 263394630 is about 16229.4371436597. The cubic root of 263394630 is about 641.0161510659.

The spelling of 263394630 in words is "two hundred sixty-three million, three hundred ninety-four thousand, six hundred thirty".