28236438232 has 32 divisors (see below), whose sum is σ = 55741143600. Its totient is φ = 13372435584.

The previous prime is 28236438211. The next prime is 28236438271. The reversal of 28236438232 is 23283463282.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 867598 + ... + 899554.

Almost surely, 2^28236438232 is an apocalyptic number.

It is an amenable number.

28236438232 is a deficient number, since it is larger than the sum of its proper divisors (27504705368).

28236438232 is a wasteful number, since it uses less digits than its factorization.

28236438232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37795 (or 37791 counting only the distinct ones).

The product of its digits is 663552, while the sum is 43.

The spelling of 28236438232 in words is "twenty-eight billion, two hundred thirty-six million, four hundred thirty-eight thousand, two hundred thirty-two".