28073860 has 12 divisors (see below), whose sum is σ = 58955148. Its totient is φ = 11229536.

The previous prime is 28073839. The next prime is 28073863. The reversal of 28073860 is 6837082.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9290304 + 18783556 = 3048^2 + 4334^2 .

It is not an unprimeable number, because it can be changed into a prime (28073863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701827 + ... + 701866.

It is an arithmetic number, because the mean of its divisors is an integer number (4912929).

Almost surely, 2^28073860 is an apocalyptic number.

28073860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28073860 is an abundant number, since it is smaller than the sum of its proper divisors (30881288).

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

28073860 is a wasteful number, since it uses less digits than its factorization.

28073860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403702 (or 1403700 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28073860 is about 5298.4771397072. The cubic root of 28073860 is about 303.9256656895.

The spelling of 28073860 in words is "twenty-eight million, seventy-three thousand, eight hundred sixty".