1223828998 has 12 divisors (see below), whose sum is σ = 2135456892. Its totient is φ = 524498100.

The previous prime is 1223828993. The next prime is 1223828999. The reversal of 1223828998 is 8998283221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223828993) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6243928 + ... + 6244123.

It is an arithmetic number, because the mean of its divisors is an integer number (177954741).

Almost surely, 2^1223828998 is an apocalyptic number.

1223828998 is a deficient number, since it is larger than the sum of its proper divisors (911627894).

1223828998 is a wasteful number, since it uses less digits than its factorization.

1223828998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12488067 (or 12488060 counting only the distinct ones).

The product of its digits is 995328, while the sum is 52.

The square root of 1223828998 is about 34983.2674002872. The cubic root of 1223828998 is about 1069.6464310592.

The spelling of 1223828998 in words is "one billion, two hundred twenty-three million, eight hundred twenty-eight thousand, nine hundred ninety-eight".