28571148 has 36 divisors (see below), whose sum is σ = 74714640. Its totient is φ = 9194976.

The previous prime is 28571143. The next prime is 28571149. The reversal of 28571148 is 84117582.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28571143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12640 + ... + 14727.

Almost surely, 2^28571148 is an apocalyptic number.

It is an amenable number.

28571148 is an abundant number, since it is smaller than the sum of its proper divisors (46143492).

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

28571148 is a wasteful number, since it uses less digits than its factorization.

28571148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27406 (or 27401 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 28571148 is about 5345.1985931301. The cubic root of 28571148 is about 305.7097080366.

It can be divided in two parts, 2857 and 1148, that added together give a triangular number (4005 = T₈₉).

The spelling of 28571148 in words is "twenty-eight million, five hundred seventy-one thousand, one hundred forty-eight".