28026653 has 4 divisors (see below), whose sum is σ = 29501760. Its totient is φ = 26551548.

The previous prime is 28026643. The next prime is 28026679. The reversal of 28026653 is 35662082.

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: 35662082 = 2 ⋅17831041.

It is a cyclic number.

It is not a de Polignac number, because 28026653 - 2⁶ = 28026589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28026643) 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, 737525 + ... + 737562.

It is an arithmetic number, because the mean of its divisors is an integer number (7375440).

Almost surely, 2^28026653 is an apocalyptic number.

It is an amenable number.

28026653 is a deficient number, since it is larger than the sum of its proper divisors (1475107).

28026653 is a wasteful number, since it uses less digits than its factorization.

28026653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475106.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 28026653 is about 5294.0204948602. The cubic root of 28026653 is about 303.7552168771.

The spelling of 28026653 in words is "twenty-eight million, twenty-six thousand, six hundred fifty-three".