28420210135504 has 40 divisors (see below), whose sum is σ = 61348074507648. Its totient is φ = 12643420366080.

The previous prime is 28420210135487. The next prime is 28420210135523. The reversal of 28420210135504 is 40553101202482.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1717847757 + ... + 1717864300.

Almost surely, 2^{28420210135504} is an apocalyptic number.

It is an amenable number.

28420210135504 is an abundant number, since it is smaller than the sum of its proper divisors (32927864372144).

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

28420210135504 is a wasteful number, since it uses less digits than its factorization.

28420210135504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435712123 (or 3435712117 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 28420210135504 its reverse (40553101202482), we get a palindrome (68973311337986).

The spelling of 28420210135504 in words is "twenty-eight trillion, four hundred twenty billion, two hundred ten million, one hundred thirty-five thousand, five hundred four".