1299776 has 28 divisors (see below), whose sum is σ = 2694432. Its totient is φ = 620928.

The previous prime is 1299763. The next prime is 1299791. The reversal of 1299776 is 6779921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031 + ... + 1913.

2^1299776 is an apocalyptic number.

1299776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1299776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347216).

1299776 is an abundant number, since it is smaller than the sum of its proper divisors (1394656).

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

1299776 is an equidigital number, since it uses as much as digits as its factorization.

1299776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 908 counting only the distinct ones).

The product of its digits is 47628, while the sum is 41.

The square root of 1299776 is about 1140.0771903691. The cubic root of 1299776 is about 109.1330194331.

The spelling of 1299776 in words is "one million, two hundred ninety-nine thousand, seven hundred seventy-six".