28147146 has 8 divisors (see below), whose sum is σ = 56294304. Its totient is φ = 9382380.

The previous prime is 28147127. The next prime is 28147183. The reversal of 28147146 is 64174182.

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

28147146 is an admirable 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, 2345590 + ... + 2345601.

It is an arithmetic number, because the mean of its divisors is an integer number (7036788).

Almost surely, 2^28147146 is an apocalyptic number.

28147146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28147146 is a wasteful number, since it uses less digits than its factorization.

28147146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691196.

The product of its digits is 10752, while the sum is 33.

The square root of 28147146 is about 5305.3883929454. The cubic root of 28147146 is about 304.1898989531.

The spelling of 28147146 in words is "twenty-eight million, one hundred forty-seven thousand, one hundred forty-six".