1276818 has 16 divisors (see below), whose sum is σ = 2567136. Its totient is φ = 423360.

The previous prime is 1276817. The next prime is 1276829. The reversal of 1276818 is 8186721.

It is a happy number.

It is a Curzon number.

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (1276817) 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, 1005 + ... + 1887.

It is an arithmetic number, because the mean of its divisors is an integer number (160446).

2^1276818 is an apocalyptic number.

1276818 is an abundant number, since it is smaller than the sum of its proper divisors (1290318).

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

1276818 is a wasteful number, since it uses less digits than its factorization.

1276818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its digits is 5376, while the sum is 33.

The square root of 1276818 is about 1129.9637162316. The cubic root of 1276818 is about 108.4866583721.

Subtracting 1276818 from its reverse (8186721), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1276818 in words is "one million, two hundred seventy-six thousand, eight hundred eighteen".