1256622 has 32 divisors (see below), whose sum is σ = 2699520. Its totient is φ = 388800.

The previous prime is 1256621. The next prime is 1256659. The reversal of 1256622 is 2266521.

It is a junction number, because it is equal to n+sod(n) for n = 1256592 and 1256601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256621) by changing a digit.

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, 8247 + ... + 8397.

It is an arithmetic number, because the mean of its divisors is an integer number (84360).

2^1256622 is an apocalyptic number.

1256622 is an abundant number, since it is smaller than the sum of its proper divisors (1442898).

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

1256622 is a wasteful number, since it uses less digits than its factorization.

1256622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248.

The product of its digits is 1440, while the sum is 24.

The square root of 1256622 is about 1120.9915253917. The cubic root of 1256622 is about 107.9116217999.

The spelling of 1256622 in words is "one million, two hundred fifty-six thousand, six hundred twenty-two".