28357833854870 has 64 divisors (see below), whose sum is σ = 55614624758784. Its totient is φ = 10348312014720.

The previous prime is 28357833854863. The next prime is 28357833854887. The reversal of 28357833854870 is 7845833875382.

It is a super-2 number, since 2×28357833854870² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28357833854794 and 28357833854803.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4629965 + ... + 8840375.

It is an arithmetic number, because the mean of its divisors is an integer number (868978511856).

Almost surely, 2^{28357833854870} is an apocalyptic number.

28357833854870 is a deficient number, since it is larger than the sum of its proper divisors (27256790903914).

28357833854870 is a wasteful number, since it uses less digits than its factorization.

28357833854870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211037.

The product of its (nonzero) digits is 1083801600, while the sum is 71.

The spelling of 28357833854870 in words is "twenty-eight trillion, three hundred fifty-seven billion, eight hundred thirty-three million, eight hundred fifty-four thousand, eight hundred seventy".