28601860 has 24 divisors (see below), whose sum is σ = 68644800. Its totient is φ = 9806304.

The previous prime is 28601819. The next prime is 28601861. The reversal of 28601860 is 6810682.

It is not an unprimeable number, because it can be changed into a prime (28601861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102010 + ... + 102289.

It is an arithmetic number, because the mean of its divisors is an integer number (2860200).

Almost surely, 2^28601860 is an apocalyptic number.

28601860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28601860 is an abundant number, since it is smaller than the sum of its proper divisors (40042940).

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

28601860 is a wasteful number, since it uses less digits than its factorization.

28601860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204315 (or 204313 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 28601860 is about 5348.0706801612. The cubic root of 28601860 is about 305.8192077132.

The spelling of 28601860 in words is "twenty-eight million, six hundred one thousand, eight hundred sixty".