28470920083081 has 12 divisors (see below), whose sum is σ = 33360979804308. Its totient is φ = 24225516978432.

The previous prime is 28470920083049. The next prime is 28470920083093. The reversal of 28470920083081 is 18038002907482.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15481203067456 + 12989717015625 = 3934616^2 + 3604125^2 .

It is not a de Polignac number, because 28470920083081 - 2⁵ = 28470920083049 is a prime.

It is a super-2 number, since 2×28470920083081² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28470920183081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2120574256 + ... + 2120587681.

It is an arithmetic number, because the mean of its divisors is an integer number (2780081650359).

Almost surely, 2^{28470920083081} is an apocalyptic number.

It is an amenable number.

28470920083081 is a deficient number, since it is larger than the sum of its proper divisors (4890059721227).

28470920083081 is a wasteful number, since it uses less digits than its factorization.

28470920083081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241162088 (or 4241162081 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 52.

The spelling of 28470920083081 in words is "twenty-eight trillion, four hundred seventy billion, nine hundred twenty million, eighty-three thousand, eighty-one".