28397935144456 has 32 divisors (see below), whose sum is σ = 53601227254080. Its totient is φ = 14104503000000.

The previous prime is 28397935144387. The next prime is 28397935144591. The reversal of 28397935144456 is 65444153979382.

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, 13283670 + ... + 15272581.

It is an arithmetic number, because the mean of its divisors is an integer number (1675038351690).

Almost surely, 2^{28397935144456} is an apocalyptic number.

It is an amenable number.

28397935144456 is a deficient number, since it is larger than the sum of its proper divisors (25203292109624).

28397935144456 is a wasteful number, since it uses less digits than its factorization.

28397935144456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28557085 (or 28557081 counting only the distinct ones).

The product of its digits is 783820800, while the sum is 70.

The spelling of 28397935144456 in words is "twenty-eight trillion, three hundred ninety-seven billion, nine hundred thirty-five million, one hundred forty-four thousand, four hundred fifty-six".