1267788 has 12 divisors (see below), whose sum is σ = 2958200. Its totient is φ = 422592.

The previous prime is 1267787. The next prime is 1267789. The reversal of 1267788 is 8877621.

It is an interprime number because it is at equal distance from previous prime (1267787) and next prime (1267789).

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1267787) 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, 52813 + ... + 52836.

2^1267788 is an apocalyptic number.

It is an amenable number.

1267788 is an abundant number, since it is smaller than the sum of its proper divisors (1690412).

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

1267788 is a wasteful number, since it uses less digits than its factorization.

1267788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105656 (or 105654 counting only the distinct ones).

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

The square root of 1267788 is about 1125.9609229454. The cubic root of 1267788 is about 108.2303041502.

The spelling of 1267788 in words is "one million, two hundred sixty-seven thousand, seven hundred eighty-eight".