1233728636 has 12 divisors (see below), whose sum is σ = 2467457328. Its totient is φ = 528740832.

The previous prime is 1233728621. The next prime is 1233728651. The reversal of 1233728636 is 6368273321.

It is an interprime number because it is at equal distance from previous prime (1233728621) and next prime (1233728651).

1233728636 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1233728593 and 1233728602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22030841 + ... + 22030896.

It is an arithmetic number, because the mean of its divisors is an integer number (205621444).

Almost surely, 2^1233728636 is an apocalyptic number.

It is an amenable number.

1233728636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1233728636 is a wasteful number, since it uses less digits than its factorization.

1233728636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44061748 (or 44061746 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 1233728636 is about 35124.4734622457. The cubic root of 1233728636 is about 1072.5228372872.

The spelling of 1233728636 in words is "one billion, two hundred thirty-three million, seven hundred twenty-eight thousand, six hundred thirty-six".