1228550 has 12 divisors (see below), whose sum is σ = 2285196. Its totient is φ = 491400.

The previous prime is 1228547. The next prime is 1228567. The reversal of 1228550 is 558221.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 12236 + ... + 12335.

It is an arithmetic number, because the mean of its divisors is an integer number (190433).

2^1228550 is an apocalyptic number.

1228550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228550 is a deficient number, since it is larger than the sum of its proper divisors (1056646).

1228550 is a wasteful number, since it uses less digits than its factorization.

1228550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24583 (or 24578 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1228550 is about 1108.3997473836. The cubic root of 1228550 is about 107.1020077081.

The spelling of 1228550 in words is "one million, two hundred twenty-eight thousand, five hundred fifty".