28058269 has 4 divisors (see below), whose sum is σ = 29535040. Its totient is φ = 26581500.

The previous prime is 28058267. The next prime is 28058287. The reversal of 28058269 is 96285082.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96285082 = 2 ⋅48142541.

It is a cyclic number.

It is not a de Polignac number, because 28058269 - 2¹ = 28058267 is a prime.

It is a super-2 number, since 2×28058269² = 1574532918552722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28058267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738357 + ... + 738394.

It is an arithmetic number, because the mean of its divisors is an integer number (7383760).

Almost surely, 2^28058269 is an apocalyptic number.

It is an amenable number.

28058269 is a deficient number, since it is larger than the sum of its proper divisors (1476771).

28058269 is a wasteful number, since it uses less digits than its factorization.

28058269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476770.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 28058269 is about 5297.0056635801. The cubic root of 28058269 is about 303.8693929087.

The spelling of 28058269 in words is "twenty-eight million, fifty-eight thousand, two hundred sixty-nine".