28575712 has 24 divisors (see below), whose sum is σ = 61373592. Its totient is φ = 12988800.

The previous prime is 28575649. The next prime is 28575751. The reversal of 28575712 is 21757582.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40239 + ... + 40942.

It is an arithmetic number, because the mean of its divisors is an integer number (2557233).

Almost surely, 2^28575712 is an apocalyptic number.

28575712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28575712 is an abundant number, since it is smaller than the sum of its proper divisors (32797880).

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

28575712 is a wasteful number, since it uses less digits than its factorization.

28575712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81202 (or 81194 counting only the distinct ones).

The product of its digits is 39200, while the sum is 37.

The square root of 28575712 is about 5345.6255012861. The cubic root of 28575712 is about 305.7259853526.

The spelling of 28575712 in words is "twenty-eight million, five hundred seventy-five thousand, seven hundred twelve".