28527900 has 36 divisors (see below), whose sum is σ = 82541592. Its totient is φ = 7607360.

The previous prime is 28527881. The next prime is 28527901. The reversal of 28527900 is 972582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28527901) 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 11 ways as a sum of consecutive naturals, for example, 47247 + ... + 47846.

It is an arithmetic number, because the mean of its divisors is an integer number (2292822).

Almost surely, 2^28527900 is an apocalyptic number.

28527900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28527900 is an abundant number, since it is smaller than the sum of its proper divisors (54013692).

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

28527900 is a wasteful number, since it uses less digits than its factorization.

28527900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95110 (or 95103 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 28527900 is about 5341.1515612272. The cubic root of 28527900 is about 305.5553797367. Note that the first 3 decimals are identical.

The spelling of 28527900 in words is "twenty-eight million, five hundred twenty-seven thousand, nine hundred".