28145960 has 32 divisors (see below), whose sum is σ = 63698400. Its totient is φ = 11192640.

The previous prime is 28145941. The next prime is 28145977. The reversal of 28145960 is 6954182.

It is a self number, because there is not a number n which added to its sum of digits gives 28145960.

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 7 ways as a sum of consecutive naturals, for example, 5195 + ... + 9125.

It is an arithmetic number, because the mean of its divisors is an integer number (1990575).

Almost surely, 2^28145960 is an apocalyptic number.

28145960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28145960 is an abundant number, since it is smaller than the sum of its proper divisors (35552440).

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

28145960 is a wasteful number, since it uses less digits than its factorization.

28145960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121 (or 4117 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28145960 is about 5305.2766186128. The cubic root of 28145960 is about 304.1856264739.

The spelling of 28145960 in words is "twenty-eight million, one hundred forty-five thousand, nine hundred sixty".