263216020 has 24 divisors (see below), whose sum is σ = 563185224. Its totient is φ = 103299456.

The previous prime is 263216011. The next prime is 263216021. The reversal of 263216020 is 20612362.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45535504 + 217680516 = 6748^2 + 14754^2 .

It is a junction number, because it is equal to n+sod(n) for n = 263215982 and 263216000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263216021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123099 + ... + 125218.

It is an arithmetic number, because the mean of its divisors is an integer number (23466051).

Almost surely, 2^263216020 is an apocalyptic number.

263216020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

263216020 is an abundant number, since it is smaller than the sum of its proper divisors (299969204).

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

263216020 is a wasteful number, since it uses less digits than its factorization.

263216020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248379 (or 248377 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 263216020 is about 16223.9335550908. The cubic root of 263216020 is about 640.8712255806.

Adding to 263216020 its reverse (20612362), we get a palindrome (283828382).

The spelling of 263216020 in words is "two hundred sixty-three million, two hundred sixteen thousand, twenty".