28571130 has 80 divisors (see below), whose sum is σ = 87816960. Its totient is φ = 6529248.

The previous prime is 28571113. The next prime is 28571131. The reversal of 28571130 is 3117582.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28571094 and 28571103.

It is not an unprimeable number, because it can be changed into a prime (28571131) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3151 + ... + 8189.

It is an arithmetic number, because the mean of its divisors is an integer number (1097712).

Almost surely, 2^28571130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28571130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43908480).

28571130 is an abundant number, since it is smaller than the sum of its proper divisors (59245830).

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

28571130 is a wasteful number, since it uses less digits than its factorization.

28571130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5065 (or 5056 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 28571130 is about 5345.1969093757. The cubic root of 28571130 is about 305.7096438369.

The spelling of 28571130 in words is "twenty-eight million, five hundred seventy-one thousand, one hundred thirty".