28025700 has 36 divisors (see below), whose sum is σ = 81088560. Its totient is φ = 7473440.

The previous prime is 28025693. The next prime is 28025713. The reversal of 28025700 is 752082.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 46410 + ... + 47009.

It is an arithmetic number, because the mean of its divisors is an integer number (2252460).

Almost surely, 2^28025700 is an apocalyptic number.

28025700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28025700 is an abundant number, since it is smaller than the sum of its proper divisors (53062860).

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

28025700 is a wasteful number, since it uses less digits than its factorization.

28025700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93436 (or 93429 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 28025700 is about 5293.9304868878. The cubic root of 28025700 is about 303.7517739401.

Adding to 28025700 its reverse (752082), we get a palindrome (28777782).

The spelling of 28025700 in words is "twenty-eight million, twenty-five thousand, seven hundred".