1263812 has 12 divisors (see below), whose sum is σ = 2412816. Its totient is φ = 574440.

The previous prime is 1263803. The next prime is 1263817. The reversal of 1263812 is 2183621.

1263812 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is a plaindrome in base 9.

It is not an unprimeable number, because it can be changed into a prime (1263817) 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, 14318 + ... + 14405.

It is an arithmetic number, because the mean of its divisors is an integer number (201068).

2^1263812 is an apocalyptic number.

It is an amenable number.

1263812 is a deficient number, since it is larger than the sum of its proper divisors (1149004).

1263812 is a wasteful number, since it uses less digits than its factorization.

1263812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28738 (or 28736 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

The square root of 1263812 is about 1124.1939334474. The cubic root of 1263812 is about 108.1170427503.

The spelling of 1263812 in words is "one million, two hundred sixty-three thousand, eight hundred twelve".