28158011436 has 24 divisors (see below), whose sum is σ = 65705032624. Its totient is φ = 9385574400.

The previous prime is 28158011423. The next prime is 28158011437. The reversal of 28158011436 is 63411085182.

It is a junction number, because it is equal to n+sod(n) for n = 28158011394 and 28158011403.

It is not an unprimeable number, because it can be changed into a prime (28158011437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 328236 + ... + 405036.

Almost surely, 2^28158011436 is an apocalyptic number.

It is an amenable number.

28158011436 is an abundant number, since it is smaller than the sum of its proper divisors (37547021188).

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

28158011436 is a wasteful number, since it uses less digits than its factorization.

28158011436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107361 (or 107359 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The spelling of 28158011436 in words is "twenty-eight billion, one hundred fifty-eight million, eleven thousand, four hundred thirty-six".