28145210 has 32 divisors (see below), whose sum is σ = 52710912. Its totient is φ = 10808640.

The previous prime is 28145209. The next prime is 28145267. The reversal of 28145210 is 1254182.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50252 + ... + 50808.

It is an arithmetic number, because the mean of its divisors is an integer number (1647216).

Almost surely, 2^28145210 is an apocalyptic number.

28145210 is a deficient number, since it is larger than the sum of its proper divisors (24565702).

28145210 is a wasteful number, since it uses less digits than its factorization.

28145210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 28145210 is about 5305.2059337975. The cubic root of 28145210 is about 304.1829245913.

Adding to 28145210 its reverse (1254182), we get a palindrome (29399392).

The spelling of 28145210 in words is "twenty-eight million, one hundred forty-five thousand, two hundred ten".