1266738 has 32 divisors (see below), whose sum is σ = 2928960. Its totient is φ = 360960.

The previous prime is 1266731. The next prime is 1266743. The reversal of 1266738 is 8376621.

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

It is a junction number, because it is equal to n+sod(n) for n = 1266699 and 1266708.

It is not an unprimeable number, because it can be changed into a prime (1266731) 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, 558 + ... + 1686.

It is an arithmetic number, because the mean of its divisors is an integer number (91530).

2^1266738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464480).

1266738 is an abundant number, since it is smaller than the sum of its proper divisors (1662222).

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

1266738 is a wasteful number, since it uses less digits than its factorization.

1266738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162.

The product of its digits is 12096, while the sum is 33.

The square root of 1266738 is about 1125.4945579611. The cubic root of 1266738 is about 108.2004166067.

The spelling of 1266738 in words is "one million, two hundred sixty-six thousand, seven hundred thirty-eight".