1228090146 has 16 divisors (see below), whose sum is σ = 2479136544. Its totient is φ = 405537344.

The previous prime is 1228090069. The next prime is 1228090147. The reversal of 1228090146 is 6410908221.

It is not an unprimeable number, because it can be changed into a prime (1228090147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955815 + ... + 957098.

It is an arithmetic number, because the mean of its divisors is an integer number (154946034).

Almost surely, 2^1228090146 is an apocalyptic number.

1228090146 is an abundant number, since it is smaller than the sum of its proper divisors (1251046398).

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

1228090146 is a wasteful number, since it uses less digits than its factorization.

1228090146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913025.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1228090146 is about 35044.1171382587. The cubic root of 1228090146 is about 1070.8864305519.

Adding to 1228090146 its reverse (6410908221), we get a palindrome (7638998367).

The spelling of 1228090146 in words is "one billion, two hundred twenty-eight million, ninety thousand, one hundred forty-six".