1262778 has 48 divisors (see below), whose sum is σ = 2962656. Its totient is φ = 355680.

The previous prime is 1262771. The next prime is 1262783. The reversal of 1262778 is 8772621.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1262771) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23800 + ... + 23852.

It is an arithmetic number, because the mean of its divisors is an integer number (61722).

2^1262778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1262778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481328).

1262778 is an abundant number, since it is smaller than the sum of its proper divisors (1699878).

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

1262778 is a wasteful number, since it uses less digits than its factorization.

1262778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 88 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 1262778 is about 1123.7339542792. The cubic root of 1262778 is about 108.0875490376.

It can be divided in two parts, 12627 and 78, that multiplied together give a triangular number (984906 = T₁₄₀₃).

The spelling of 1262778 in words is "one million, two hundred sixty-two thousand, seven hundred seventy-eight".