28063960 has 64 divisors (see below), whose sum is σ = 65318400. Its totient is φ = 10847616.

The previous prime is 28063951. The next prime is 28064009. The reversal of 28063960 is 6936082.

It is a happy number.

It is a super-3 number, since 3×28063960³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262227 + ... + 262333.

It is an arithmetic number, because the mean of its divisors is an integer number (1020600).

Almost surely, 2^28063960 is an apocalyptic number.

28063960 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 28063960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32659200).

28063960 is an abundant number, since it is smaller than the sum of its proper divisors (37254440).

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

28063960 is a wasteful number, since it uses less digits than its factorization.

28063960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 276 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 28063960 is about 5297.5428266320. The cubic root of 28063960 is about 303.8899359176.

The spelling of 28063960 in words is "twenty-eight million, sixty-three thousand, nine hundred sixty".