28106469 has 12 divisors (see below), whose sum is σ = 40716000. Its totient is φ = 18683304.

The previous prime is 28106447. The next prime is 28106473. The reversal of 28106469 is 96460182.

28106469 is a `hidden beast` number, since 2 + 8 + 1 + 0 + 646 + 9 = 666.

It is not a de Polignac number, because 28106469 - 2¹³ = 28098277 is a prime.

It is a super-2 number, since 2×28106469² = 1579947199295922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28106489) 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, 1119 + ... + 7580.

It is an arithmetic number, because the mean of its divisors is an integer number (3393000).

Almost surely, 2^28106469 is an apocalyptic number.

It is an amenable number.

28106469 is a deficient number, since it is larger than the sum of its proper divisors (12609531).

28106469 is a wasteful number, since it uses less digits than its factorization.

28106469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9064 (or 9061 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28106469 is about 5301.5534515838. The cubic root of 28106469 is about 304.0432944168.

The spelling of 28106469 in words is "twenty-eight million, one hundred six thousand, four hundred sixty-nine".