28539700 has 36 divisors (see below), whose sum is σ = 70780192. Its totient is φ = 9784800.

The previous prime is 28539689. The next prime is 28539733. The reversal of 28539700 is 793582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19686 + ... + 21085.

Almost surely, 2^28539700 is an apocalyptic number.

28539700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28539700 is an abundant number, since it is smaller than the sum of its proper divisors (42240492).

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

28539700 is a wasteful number, since it uses less digits than its factorization.

28539700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40792 (or 40785 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 28539700 is about 5342.2560777260. The cubic root of 28539700 is about 305.5975029035.

The spelling of 28539700 in words is "twenty-eight million, five hundred thirty-nine thousand, seven hundred".