28523146 has 8 divisors (see below), whose sum is σ = 42944580. Its totient is φ = 14208288.

The previous prime is 28523119. The next prime is 28523177. The reversal of 28523146 is 64132582.

It can be written as a sum of positive squares in 2 ways, for example, as 28504921 + 18225 = 5339^2 + 135^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25971 + ... + 27046.

Almost surely, 2^28523146 is an apocalyptic number.

28523146 is a deficient number, since it is larger than the sum of its proper divisors (14421434).

28523146 is a wasteful number, since it uses less digits than its factorization.

28523146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53288.

The product of its digits is 11520, while the sum is 31.

The square root of 28523146 is about 5340.7065075699. The cubic root of 28523146 is about 305.5384058155.

The spelling of 28523146 in words is "twenty-eight million, five hundred twenty-three thousand, one hundred forty-six".