28570842 has 24 divisors (see below), whose sum is σ = 62060544. Its totient is φ = 9499464.

The previous prime is 28570837. The next prime is 28570847. The reversal of 28570842 is 24807582.

It is a happy number.

28570842 is a `hidden beast` number, since 2 + 8 + 570 + 84 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (28570837) and next prime (28570847).

It is a junction number, because it is equal to n+sod(n) for n = 28570797 and 28570806.

It is not an unprimeable number, because it can be changed into a prime (28570847) 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, 6183 + ... + 9765.

It is an arithmetic number, because the mean of its divisors is an integer number (2585856).

Almost surely, 2^28570842 is an apocalyptic number.

28570842 is an abundant number, since it is smaller than the sum of its proper divisors (33489702).

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

28570842 is a wasteful number, since it uses less digits than its factorization.

28570842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034 (or 4031 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 28570842 is about 5345.1699692339. The cubic root of 28570842 is about 305.7086166383.

The spelling of 28570842 in words is "twenty-eight million, five hundred seventy thousand, eight hundred forty-two".