28113960 has 64 divisors (see below), whose sum is σ = 96393600. Its totient is φ = 6425856.

The previous prime is 28113923. The next prime is 28113961. The reversal of 28113960 is 6931182.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (28113961) 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 15 ways as a sum of consecutive naturals, for example, 15895 + ... + 17574.

It is an arithmetic number, because the mean of its divisors is an integer number (1506150).

Almost surely, 2^28113960 is an apocalyptic number.

28113960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28113960 is an abundant number, since it is smaller than the sum of its proper divisors (68279640).

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

28113960 is a wasteful number, since it uses less digits than its factorization.

28113960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33490 (or 33486 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 28113960 is about 5302.2598955540. The cubic root of 28113960 is about 304.0703034540.

It can be divided in two parts, 281 and 13960, that added together give a palindrome (14241).

The spelling of 28113960 in words is "twenty-eight million, one hundred thirteen thousand, nine hundred sixty".