1226388 has 12 divisors (see below), whose sum is σ = 2861600. Its totient is φ = 408792.

The previous prime is 1226387. The next prime is 1226417. The reversal of 1226388 is 8836221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226387) 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, 51088 + ... + 51111.

2^1226388 is an apocalyptic number.

It is an amenable number.

1226388 is an abundant number, since it is smaller than the sum of its proper divisors (1635212).

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

1226388 is a wasteful number, since it uses less digits than its factorization.

1226388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102206 (or 102204 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1226388 is about 1107.4240380270. The cubic root of 1226388 is about 107.0391448472.

The spelling of 1226388 in words is "one million, two hundred twenty-six thousand, three hundred eighty-eight".