28571877 has 12 divisors (see below), whose sum is σ = 43442880. Its totient is φ = 18045288.

The previous prime is 28571869. The next prime is 28571887. The reversal of 28571877 is 77817582.

28571877 is a `hidden beast` number, since 2 + 8 + 571 + 8 + 77 = 666.

It is not a de Polignac number, because 28571877 - 2³ = 28571869 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28571857) 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, 83373 + ... + 83714.

It is an arithmetic number, because the mean of its divisors is an integer number (3620240).

Almost surely, 2^28571877 is an apocalyptic number.

It is an amenable number.

28571877 is a deficient number, since it is larger than the sum of its proper divisors (14871003).

28571877 is a wasteful number, since it uses less digits than its factorization.

28571877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167112 (or 167109 counting only the distinct ones).

The product of its digits is 219520, while the sum is 45.

The square root of 28571877 is about 5345.2667847358. The cubic root of 28571877 is about 305.7123081010.

The spelling of 28571877 in words is "twenty-eight million, five hundred seventy-one thousand, eight hundred seventy-seven".