28906435 has 24 divisors (see below), whose sum is σ = 36874656. Its totient is φ = 21738240.

The previous prime is 28906433. The next prime is 28906463. The reversal of 28906435 is 53460982.

It is not a de Polignac number, because 28906435 - 2¹ = 28906433 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28906394 and 28906403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28906433) 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 23 ways as a sum of consecutive naturals, for example, 280594 + ... + 280696.

It is an arithmetic number, because the mean of its divisors is an integer number (1536444).

Almost surely, 2^28906435 is an apocalyptic number.

28906435 is a deficient number, since it is larger than the sum of its proper divisors (7968221).

28906435 is a wasteful number, since it uses less digits than its factorization.

28906435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 28906435 is about 5376.4704965246. The cubic root of 28906435 is about 306.9009112672.

The spelling of 28906435 in words is "twenty-eight million, nine hundred six thousand, four hundred thirty-five".