28485105 has 32 divisors (see below), whose sum is σ = 51442560. Its totient is φ = 13332480.

The previous prime is 28485103. The next prime is 28485133. The reversal of 28485105 is 50158482.

It is not a de Polignac number, because 28485105 - 2¹ = 28485103 is a prime.

It is a super-2 number, since 2×28485105² = 1622802413722050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (28485101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1809 + ... + 7761.

It is an arithmetic number, because the mean of its divisors is an integer number (1607580).

Almost surely, 2^28485105 is an apocalyptic number.

It is an amenable number.

28485105 is a deficient number, since it is larger than the sum of its proper divisors (22957455).

28485105 is a wasteful number, since it uses less digits than its factorization.

28485105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001.

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 28485105 is about 5337.1438991281. The cubic root of 28485105 is about 305.4025143367.

The spelling of 28485105 in words is "twenty-eight million, four hundred eighty-five thousand, one hundred five".