28070828523 has 12 divisors (see below), whose sum is σ = 40557679968. Its totient is φ = 18708842160.

The previous prime is 28070828483. The next prime is 28070828531. The reversal of 28070828523 is 32582807082.

28070828523 is a `hidden beast` number, since 280 + 70 + 8 + 285 + 23 = 666.

It is not a de Polignac number, because 28070828523 - 2⁶ = 28070828459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28070828543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 384888 + ... + 451973.

It is an arithmetic number, because the mean of its divisors is an integer number (3379806664).

Almost surely, 2^28070828523 is an apocalyptic number.

28070828523 is a deficient number, since it is larger than the sum of its proper divisors (12486851445).

28070828523 is a wasteful number, since it uses less digits than its factorization.

28070828523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840594 (or 840591 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 28070828523 in words is "twenty-eight billion, seventy million, eight hundred twenty-eight thousand, five hundred twenty-three".