1228835836 has 12 divisors (see below), whose sum is σ = 2177684320. Its totient is φ = 606640320.

The previous prime is 1228835831. The next prime is 1228835843. The reversal of 1228835836 is 6385388221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228835831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1944045 + ... + 1944676.

Almost surely, 2^1228835836 is an apocalyptic number.

It is an amenable number.

1228835836 is a deficient number, since it is larger than the sum of its proper divisors (948848484).

1228835836 is a wasteful number, since it uses less digits than its factorization.

1228835836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888804 (or 3888802 counting only the distinct ones).

The product of its digits is 552960, while the sum is 46.

The square root of 1228835836 is about 35054.7548272699. The cubic root of 1228835836 is about 1071.1031322695.

The spelling of 1228835836 in words is "one billion, two hundred twenty-eight million, eight hundred thirty-five thousand, eight hundred thirty-six".