28420174 has 8 divisors (see below), whose sum is σ = 44100360. Its totient is φ = 13720056.

The previous prime is 28420169. The next prime is 28420193. The reversal of 28420174 is 47102482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244944 + ... + 245059.

It is an arithmetic number, because the mean of its divisors is an integer number (5512545).

Almost surely, 2^28420174 is an apocalyptic number.

28420174 is a deficient number, since it is larger than the sum of its proper divisors (15680186).

28420174 is a wasteful number, since it uses less digits than its factorization.

28420174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490034.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 28420174 is about 5331.0574935936. The cubic root of 28420174 is about 305.1702856316.

The spelling of 28420174 in words is "twenty-eight million, four hundred twenty thousand, one hundred seventy-four".