28905026 has 4 divisors (see below), whose sum is σ = 43357542. Its totient is φ = 14452512.

The previous prime is 28904977. The next prime is 28905053. The reversal of 28905026 is 62050982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28783225 + 121801 = 5365^2 + 349^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28904983 and 28905001.

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 as a sum of consecutive naturals, namely, 7226255 + ... + 7226258.

Almost surely, 2^28905026 is an apocalyptic number.

28905026 is a deficient number, since it is larger than the sum of its proper divisors (14452516).

28905026 is a wasteful number, since it uses less digits than its factorization.

28905026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14452515.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 28905026 is about 5376.3394610088. The cubic root of 28905026 is about 306.8959247142.

The spelling of 28905026 in words is "twenty-eight million, nine hundred five thousand, twenty-six".