28951690355 has 16 divisors (see below), whose sum is σ = 39726531840. Its totient is φ = 19841909472.

The previous prime is 28951690331. The next prime is 28951690357. The reversal of 28951690355 is 55309615982.

It is not a de Polignac number, because 28951690355 - 2³² = 24656723059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28951690297 and 28951690306.

It is not an unprimeable number, because it can be changed into a prime (28951690357) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 156185 + ... + 286874.

It is an arithmetic number, because the mean of its divisors is an integer number (2482908240).

Almost surely, 2^28951690355 is an apocalyptic number.

28951690355 is a deficient number, since it is larger than the sum of its proper divisors (10774841485).

28951690355 is a wasteful number, since it uses less digits than its factorization.

28951690355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444938.

The product of its (nonzero) digits is 2916000, while the sum is 53.

The spelling of 28951690355 in words is "twenty-eight billion, nine hundred fifty-one million, six hundred ninety thousand, three hundred fifty-five".