28039137502228 has 12 divisors (see below), whose sum is σ = 49130839415392. Its totient is φ = 14001754812120.

The previous prime is 28039137502169. The next prime is 28039137502237. The reversal of 28039137502228 is 82220573193082.

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, 4453481208 + ... + 4453487503.

Almost surely, 2^{28039137502228} is an apocalyptic number.

It is an amenable number.

28039137502228 is a deficient number, since it is larger than the sum of its proper divisors (21091701913164).

28039137502228 is a wasteful number, since it uses less digits than its factorization.

28039137502228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8906969502 (or 8906969500 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 28039137502228 in words is "twenty-eight trillion, thirty-nine billion, one hundred thirty-seven million, five hundred two thousand, two hundred twenty-eight".