28570613020 has 96 divisors (see below), whose sum is σ = 62575119936. Its totient is φ = 10948608000.

The previous prime is 28570613017. The next prime is 28570613021. The reversal of 28570613020 is 2031607582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28570613021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23788420 + ... + 23789620.

It is an arithmetic number, because the mean of its divisors is an integer number (651824166).

Almost surely, 2^28570613020 is an apocalyptic number.

28570613020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28570613020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31287559968).

28570613020 is an abundant number, since it is smaller than the sum of its proper divisors (34004506916).

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

28570613020 is a wasteful number, since it uses less digits than its factorization.

28570613020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 28570613020 in words is "twenty-eight billion, five hundred seventy million, six hundred thirteen thousand, twenty".