28306700 has 36 divisors (see below), whose sum is σ = 65042712. Its totient is φ = 10656000.

The previous prime is 28306693. The next prime is 28306709. The reversal of 28306700 is 760382.

It is a self number, because there is not a number n which added to its sum of digits gives 28306700.

It is not an unprimeable number, because it can be changed into a prime (28306709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6626 + ... + 10025.

It is an arithmetic number, because the mean of its divisors is an integer number (1806742).

Almost surely, 2^28306700 is an apocalyptic number.

28306700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28306700 is an abundant number, since it is smaller than the sum of its proper divisors (36736012).

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

28306700 is a wasteful number, since it uses less digits than its factorization.

28306700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16682 (or 16675 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 28306700 is about 5320.4041199894. The cubic root of 28306700 is about 304.7635899817.

The spelling of 28306700 in words is "twenty-eight million, three hundred six thousand, seven hundred".