263630040 has 32 divisors (see below), whose sum is σ = 790890480. Its totient is φ = 70301312.

The previous prime is 263630027. The next prime is 263630053. The reversal of 263630040 is 40036362.

It is an interprime number because it is at equal distance from previous prime (263630027) and next prime (263630053).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098339 + ... + 1098578.

Almost surely, 2^263630040 is an apocalyptic number.

263630040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263630040 is an abundant number, since it is smaller than the sum of its proper divisors (527260440).

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

263630040 is a wasteful number, since it uses less digits than its factorization.

263630040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196931 (or 2196927 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 263630040 is about 16236.6880859367. The cubic root of 263630040 is about 641.2070644470.

The spelling of 263630040 in words is "two hundred sixty-three million, six hundred thirty thousand, forty".