28209034 has 32 divisors (see below), whose sum is σ = 51281280. Its totient is φ = 11368512.

The previous prime is 28209029. The next prime is 28209037. The reversal of 28209034 is 43090282.

It is a junction number, because it is equal to n+sod(n) for n = 28208993 and 28209011.

It is not an unprimeable number, because it can be changed into a prime (28209037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45712 + ... + 46324.

It is an arithmetic number, because the mean of its divisors is an integer number (1602540).

Almost surely, 2^28209034 is an apocalyptic number.

28209034 is a deficient number, since it is larger than the sum of its proper divisors (23072246).

28209034 is a wasteful number, since it uses less digits than its factorization.

28209034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 28209034 is about 5311.2177511377. The cubic root of 28209034 is about 304.4126796659.

The spelling of 28209034 in words is "twenty-eight million, two hundred nine thousand, thirty-four".