28122435 has 24 divisors (see below), whose sum is σ = 53177904. Its totient is φ = 13634880.

The previous prime is 28122427. The next prime is 28122439. The reversal of 28122435 is 53422182.

It is not a de Polignac number, because 28122435 - 2³ = 28122427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28122399 and 28122408.

It is not an unprimeable number, because it can be changed into a prime (28122439) 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, 27912 + ... + 28901.

It is an arithmetic number, because the mean of its divisors is an integer number (2215746).

Almost surely, 2^28122435 is an apocalyptic number.

28122435 is a deficient number, since it is larger than the sum of its proper divisors (25055469).

28122435 is a wasteful number, since it uses less digits than its factorization.

28122435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56835 (or 56832 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 28122435 is about 5303.0590228660. The cubic root of 28122435 is about 304.1008545506.

The spelling of 28122435 in words is "twenty-eight million, one hundred twenty-two thousand, four hundred thirty-five".