28058769 has 12 divisors (see below), whose sum is σ = 40636596. Its totient is φ = 18656352.

The previous prime is 28058749. The next prime is 28058773. The reversal of 28058769 is 96785082.

28058769 is a `hidden beast` number, since 2 + 8 + 0 + 587 + 69 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7700625 + 20358144 = 2775^2 + 4512^2 .

It is not a de Polignac number, because 28058769 - 2⁹ = 28058257 is a prime.

It is a super-2 number, since 2×28058769² = 1574589035590722, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (28058749) 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, 354 + ... + 7499.

It is an arithmetic number, because the mean of its divisors is an integer number (3386383).

Almost surely, 2^28058769 is an apocalyptic number.

It is an amenable number.

28058769 is a deficient number, since it is larger than the sum of its proper divisors (12577827).

28058769 is a wasteful number, since it uses less digits than its factorization.

28058769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8256 (or 8253 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 28058769 is about 5297.0528598457. The cubic root of 28058769 is about 303.8711978881.

It can be divided in two parts, 280 and 58769, that added together give a 10-th power (59049 = 3¹⁰).

The spelling of 28058769 in words is "twenty-eight million, fifty-eight thousand, seven hundred sixty-nine".