28426605 has 16 divisors (see below), whose sum is σ = 45598464. Its totient is φ = 15122240.

The previous prime is 28426591. The next prime is 28426609. The reversal of 28426605 is 50662482.

It is not a de Polignac number, because 28426605 - 2⁴ = 28426589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28426609) 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 15 ways as a sum of consecutive naturals, for example, 4267 + ... + 8663.

It is an arithmetic number, because the mean of its divisors is an integer number (2849904).

Almost surely, 2^28426605 is an apocalyptic number.

It is an amenable number.

28426605 is a deficient number, since it is larger than the sum of its proper divisors (17171859).

28426605 is a wasteful number, since it uses less digits than its factorization.

28426605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4836.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 28426605 is about 5331.6606231080. The cubic root of 28426605 is about 305.1933021702.

The spelling of 28426605 in words is "twenty-eight million, four hundred twenty-six thousand, six hundred five".