28026435 has 32 divisors (see below), whose sum is σ = 46218240. Its totient is φ = 14496768.

The previous prime is 28026377. The next prime is 28026437. The reversal of 28026435 is 53462082.

It is a Cunningham number, because it is equal to 5294²-1.

It is not a de Polignac number, because 28026435 - 2⁶ = 28026371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28026437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79219 + ... + 79571.

It is an arithmetic number, because the mean of its divisors is an integer number (1444320).

Almost surely, 2^28026435 is an apocalyptic number.

28026435 is a deficient number, since it is larger than the sum of its proper divisors (18191805).

28026435 is a wasteful number, since it uses less digits than its factorization.

28026435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 28026435 is about 5293.9999055535. Note that the first 4 decimals coincide. The cubic root of 28026435 is about 303.7544293076.

The spelling of 28026435 in words is "twenty-eight million, twenty-six thousand, four hundred thirty-five".