1268778 has 32 divisors (see below), whose sum is σ = 3072384. Its totient is φ = 340992.

The previous prime is 1268777. The next prime is 1268783. The reversal of 1268778 is 8778621.

It is a super-2 number, since 2×1268778² = 3219595226568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1268777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175 + ... + 1602.

It is an arithmetic number, because the mean of its divisors is an integer number (96012).

2^1268778 is an apocalyptic number.

1268778 is an abundant number, since it is smaller than the sum of its proper divisors (1803606).

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

1268778 is a wasteful number, since it uses less digits than its factorization.

1268778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806.

The product of its digits is 37632, while the sum is 39.

The square root of 1268778 is about 1126.4004616476. The cubic root of 1268778 is about 108.2584687232.

The spelling of 1268778 in words is "one million, two hundred sixty-eight thousand, seven hundred seventy-eight".