1228955 has 32 divisors (see below), whose sum is σ = 1889664. Its totient is φ = 746496.

The previous prime is 1228951. The next prime is 1228961. The reversal of 1228955 is 5598221.

1228955 = 416² + 417² + ... + 422².

It is a cyclic number.

It is not a de Polignac number, because 1228955 - 2² = 1228951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228951) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16799 + ... + 16871.

It is an arithmetic number, because the mean of its divisors is an integer number (59052).

2^1228955 is an apocalyptic number.

1228955 is a deficient number, since it is larger than the sum of its proper divisors (660709).

1228955 is a wasteful number, since it uses less digits than its factorization.

1228955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135.

The product of its digits is 7200, while the sum is 32.

The square root of 1228955 is about 1108.5824281487. The cubic root of 1228955 is about 107.1137753875.

The spelling of 1228955 in words is "one million, two hundred twenty-eight thousand, nine hundred fifty-five".