1228269996 has 72 divisors (see below), whose sum is σ = 3165706544. Its totient is φ = 401448960.

The previous prime is 1228269983. The next prime is 1228269997. The reversal of 1228269996 is 6999628221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1228269997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 580236 + ... + 582348.

Almost surely, 2^1228269996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228269996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1582853272).

1228269996 is an abundant number, since it is smaller than the sum of its proper divisors (1937436548).

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

1228269996 is a wasteful number, since it uses less digits than its factorization.

1228269996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431 (or 2426 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1228269996 is about 35046.6830955513. The cubic root of 1228269996 is about 1070.9387040011.

The spelling of 1228269996 in words is "one billion, two hundred twenty-eight million, two hundred sixty-nine thousand, nine hundred ninety-six".