28906136 has 32 divisors (see below), whose sum is σ = 63943680. Its totient is φ = 11988000.

The previous prime is 28906123. The next prime is 28906151. The reversal of 28906136 is 63160982.

It is a junction number, because it is equal to n+sod(n) for n = 28906096 and 28906105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6590 + ... + 10061.

It is an arithmetic number, because the mean of its divisors is an integer number (1998240).

Almost surely, 2^28906136 is an apocalyptic number.

It is an amenable number.

28906136 is an abundant number, since it is smaller than the sum of its proper divisors (35037544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28906136 is a wasteful number, since it uses less digits than its factorization.

28906136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16695 (or 16691 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 28906136 is about 5376.4426901065. The cubic root of 28906136 is about 306.8998530981.

The spelling of 28906136 in words is "twenty-eight million, nine hundred six thousand, one hundred thirty-six".