28576971 has 12 divisors (see below), whose sum is σ = 43072848. Its totient is φ = 18222864.

The previous prime is 28576963. The next prime is 28576973. The reversal of 28576971 is 17967582.

28576971 is a `hidden beast` number, since 2 + 8 + 576 + 9 + 71 = 666.

It is not a de Polignac number, because 28576971 - 2³ = 28576963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28576973) 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, 68820 + ... + 69233.

It is an arithmetic number, because the mean of its divisors is an integer number (3589404).

Almost surely, 2^28576971 is an apocalyptic number.

28576971 is a deficient number, since it is larger than the sum of its proper divisors (14495877).

28576971 is a wasteful number, since it uses less digits than its factorization.

28576971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138082 (or 138079 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 28576971 is about 5345.7432598283. The cubic root of 28576971 is about 305.7304752187.

The spelling of 28576971 in words is "twenty-eight million, five hundred seventy-six thousand, nine hundred seventy-one".