1226881 has 4 divisors (see below), whose sum is σ = 1230592. Its totient is φ = 1223172.

The previous prime is 1226867. The next prime is 1226891. The reversal of 1226881 is 1886221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1886221 = 881 ⋅2141.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1226881 is a prime.

It is a super-2 number, since 2×1226881² = 3010473976322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226801) 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, 1305 + ... + 2038.

It is an arithmetic number, because the mean of its divisors is an integer number (307648).

2^1226881 is an apocalyptic number.

1226881 is the 640-th hex number.

It is an amenable number.

1226881 is a deficient number, since it is larger than the sum of its proper divisors (3711).

1226881 is an equidigital number, since it uses as much as digits as its factorization.

1226881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710.

The product of its digits is 1536, while the sum is 28.

The square root of 1226881 is about 1107.6466042922. The cubic root of 1226881 is about 107.0534859390.

The spelling of 1226881 in words is "one million, two hundred twenty-six thousand, eight hundred eighty-one".