28357514836 has 48 divisors (see below), whose sum is σ = 60811430400. Its totient is φ = 11293521408.

The previous prime is 28357514789. The next prime is 28357514837. The reversal of 28357514836 is 63841575382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28357514837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339451 + ... + 414658.

It is an arithmetic number, because the mean of its divisors is an integer number (1266904800).

Almost surely, 2^28357514836 is an apocalyptic number.

It is an amenable number.

28357514836 is an abundant number, since it is smaller than the sum of its proper divisors (32453915564).

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

28357514836 is a wasteful number, since it uses less digits than its factorization.

28357514836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754216 (or 754214 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 52.

The spelling of 28357514836 in words is "twenty-eight billion, three hundred fifty-seven million, five hundred fourteen thousand, eight hundred thirty-six".