28224170 has 32 divisors (see below), whose sum is σ = 55036800. Its totient is φ = 10359360.

The previous prime is 28224137. The next prime is 28224173. The reversal of 28224170 is 7142282.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (28224173) 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, 25325 + ... + 26415.

It is an arithmetic number, because the mean of its divisors is an integer number (1719900).

Almost surely, 2^28224170 is an apocalyptic number.

28224170 is a deficient number, since it is larger than the sum of its proper divisors (26812630).

28224170 is a wasteful number, since it uses less digits than its factorization.

28224170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 28224170 is about 5312.6424686779. The cubic root of 28224170 is about 304.4671157315.

The spelling of 28224170 in words is "twenty-eight million, two hundred twenty-four thousand, one hundred seventy".