28767105 has 12 divisors (see below), whose sum is σ = 49863060. Its totient is φ = 15342432.

The previous prime is 28767071. The next prime is 28767113. The reversal of 28767105 is 50176782.

It can be written as a sum of positive squares in 2 ways, for example, as 12194064 + 16573041 = 3492^2 + 4071^2 .

It is not a de Polignac number, because 28767105 - 2⁶ = 28767041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28767105.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 319590 + ... + 319679.

It is an arithmetic number, because the mean of its divisors is an integer number (4155255).

Almost surely, 2^28767105 is an apocalyptic number.

It is an amenable number.

28767105 is a deficient number, since it is larger than the sum of its proper divisors (21095955).

28767105 is a wasteful number, since it uses less digits than its factorization.

28767105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639280 (or 639277 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 28767105 is about 5363.4974596806. The cubic root of 28767105 is about 306.4070259565.

The spelling of 28767105 in words is "twenty-eight million, seven hundred sixty-seven thousand, one hundred five".