1267620 has 48 divisors (see below), whose sum is σ = 3651648. Its totient is φ = 328320.

The previous prime is 1267613. The next prime is 1267633. The reversal of 1267620 is 267621.

It is a happy 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, 1935 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (76076).

2^1267620 is an apocalyptic number.

1267620 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 1267620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1825824).

1267620 is an abundant number, since it is smaller than the sum of its proper divisors (2384028).

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

1267620 is a wasteful number, since it uses less digits than its factorization.

1267620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1267620 is about 1125.8863175294. The cubic root of 1267620 is about 108.2255232525.

Subtracting from 1267620 its reverse (267621), we obtain a palindrome (999999).

The spelling of 1267620 in words is "one million, two hundred sixty-seven thousand, six hundred twenty".