28679760 has 120 divisors (see below), whose sum is σ = 98045064. Its totient is φ = 7511040.

The previous prime is 28679747. The next prime is 28679771. The reversal of 28679760 is 6797682.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 419904 + 28259856 = 648^2 + 5316^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a nialpdrome in base 12.

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 43594 + ... + 44246.

Almost surely, 2^28679760 is an apocalyptic number.

28679760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28679760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49022532).

28679760 is an abundant number, since it is smaller than the sum of its proper divisors (69365304).

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

28679760 is a wasteful number, since it uses less digits than its factorization.

28679760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 28679760 is about 5355.3487281409. The cubic root of 28679760 is about 306.0965990036.

The spelling of 28679760 in words is "twenty-eight million, six hundred seventy-nine thousand, seven hundred sixty".