28485511 has 6 divisors (see below), whose sum is σ = 29502512. Its totient is φ = 27502440.

The previous prime is 28485491. The next prime is 28485521. The reversal of 28485511 is 11558482.

It is not a de Polignac number, because 28485511 - 2⁷ = 28485383 is a prime.

It is a super-2 number, since 2×28485511² = 1622848673862242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28485521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16095 + ... + 17776.

Almost surely, 2^28485511 is an apocalyptic number.

28485511 is a deficient number, since it is larger than the sum of its proper divisors (1017001).

28485511 is an equidigital number, since it uses as much as digits as its factorization.

28485511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33929 (or 33900 counting only the distinct ones).

The product of its digits is 12800, while the sum is 34.

The square root of 28485511 is about 5337.1819343170. The cubic root of 28485511 is about 305.4039653036.

The spelling of 28485511 in words is "twenty-eight million, four hundred eighty-five thousand, five hundred eleven".