28671524 has 36 divisors (see below), whose sum is σ = 60121152. Its totient is φ = 11697840.

The previous prime is 28671523. The next prime is 28671527. The reversal of 28671524 is 42517682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28671521) 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, 135779 + ... + 135989.

It is an arithmetic number, because the mean of its divisors is an integer number (1670032).

Almost surely, 2^28671524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28671524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30060576).

28671524 is an abundant number, since it is smaller than the sum of its proper divisors (31449628).

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

28671524 is a wasteful number, since it uses less digits than its factorization.

28671524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 243 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 28671524 is about 5354.5797220697. The cubic root of 28671524 is about 306.0672954931.

The spelling of 28671524 in words is "twenty-eight million, six hundred seventy-one thousand, five hundred twenty-four".