1228356 has 36 divisors (see below), whose sum is σ = 3139500. Its totient is φ = 404928.

The previous prime is 1228351. The next prime is 1228373. The reversal of 1228356 is 6538221.

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 562500 = 816^2 + 750^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1228351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5250 + ... + 5478.

2^1228356 is an apocalyptic number.

It is an amenable number.

1228356 is an abundant number, since it is smaller than the sum of its proper divisors (1911144).

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

1228356 is a wasteful number, since it uses less digits than its factorization.

1228356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 383 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1228356 is about 1108.3122303755. The cubic root of 1228356 is about 107.0963699283.

The spelling of 1228356 in words is "one million, two hundred twenty-eight thousand, three hundred fifty-six".