1229776 has 20 divisors (see below), whose sum is σ = 2409444. Its totient is φ = 608000.

The previous prime is 1229773. The next prime is 1229783. The reversal of 1229776 is 6779221.

It can be written as a sum of positive squares in 2 ways, for example, as 524176 + 705600 = 724^2 + 840^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229773) 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, 1236 + ... + 1996.

2^1229776 is an apocalyptic number.

1229776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1229776 is a deficient number, since it is larger than the sum of its proper divisors (1179668).

1229776 is a wasteful number, since it uses less digits than its factorization.

1229776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 864 counting only the distinct ones).

The product of its digits is 10584, while the sum is 34.

The square root of 1229776 is about 1108.9526590437. The cubic root of 1229776 is about 107.1376224321.

The spelling of 1229776 in words is "one million, two hundred twenty-nine thousand, seven hundred seventy-six".