28148170 has 8 divisors (see below), whose sum is σ = 50666724. Its totient is φ = 11259264.

The previous prime is 28148167. The next prime is 28148191. The reversal of 28148170 is 7184182.

It can be written as a sum of positive squares in 2 ways, for example, as 25110121 + 3038049 = 5011^2 + 1743^2 .

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

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, 1407399 + ... + 1407418.

Almost surely, 2^28148170 is an apocalyptic number.

28148170 is a deficient number, since it is larger than the sum of its proper divisors (22518554).

28148170 is a wasteful number, since it uses less digits than its factorization.

28148170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814824.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 28148170 is about 5305.4848977261. The cubic root of 28148170 is about 304.1935877425.

The spelling of 28148170 in words is "twenty-eight million, one hundred forty-eight thousand, one hundred seventy".