28469938 has 16 divisors (see below), whose sum is σ = 50489280. Its totient is φ = 11780496.

The previous prime is 28469933. The next prime is 28469939. The reversal of 28469938 is 83996482.

It is a junction number, because it is equal to n+sod(n) for n = 28469891 and 28469900.

It is not an unprimeable number, because it can be changed into a prime (28469933) 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 7 ways as a sum of consecutive naturals, for example, 34656 + ... + 35467.

It is an arithmetic number, because the mean of its divisors is an integer number (3155580).

Almost surely, 2^28469938 is an apocalyptic number.

28469938 is a deficient number, since it is larger than the sum of its proper divisors (22019342).

28469938 is a wasteful number, since it uses less digits than its factorization.

28469938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70161.

The product of its digits is 746496, while the sum is 49.

The square root of 28469938 is about 5335.7228188878. The cubic root of 28469938 is about 305.3483004789.

The spelling of 28469938 in words is "twenty-eight million, four hundred sixty-nine thousand, nine hundred thirty-eight".