28353433257 has 24 divisors (see below), whose sum is σ = 41582914464. Its totient is φ = 18612690624.

The previous prime is 28353433201. The next prime is 28353433261. The reversal of 28353433257 is 75233435382.

28353433257 is a `hidden beast` number, since 2 + 8 + 353 + 43 + 3 + 257 = 666.

It is not a de Polignac number, because 28353433257 - 2¹¹ = 28353431209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28353433457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1772698 + ... + 1788620.

It is an arithmetic number, because the mean of its divisors is an integer number (1732621436).

Almost surely, 2^28353433257 is an apocalyptic number.

It is an amenable number.

28353433257 is a deficient number, since it is larger than the sum of its proper divisors (13229481207).

28353433257 is a wasteful number, since it uses less digits than its factorization.

28353433257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18949 (or 18946 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 45.

The spelling of 28353433257 in words is "twenty-eight billion, three hundred fifty-three million, four hundred thirty-three thousand, two hundred fifty-seven".