1267320 has 64 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 330368.

The previous prime is 1267307. The next prime is 1267349. The reversal of 1267320 is 237621.

It is a happy number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6991 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (60750).

2^1267320 is an apocalyptic number.

1267320 is a gapful number since it is divisible by the number (10) 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 1267320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944000).

1267320 is an abundant number, since it is smaller than the sum of its proper divisors (2620680).

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

1267320 is a wasteful number, since it uses less digits than its factorization.

1267320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 1267320 is about 1125.7530812749. The cubic root of 1267320 is about 108.2169848844.

The spelling of 1267320 in words is "one million, two hundred sixty-seven thousand, three hundred twenty".