28838560 has 24 divisors (see below), whose sum is σ = 68131476. Its totient is φ = 11535360.

The previous prime is 28838531. The next prime is 28838569. The reversal of 28838560 is 6583882.

It can be written as a sum of positive squares in 2 ways, for example, as 24561936 + 4276624 = 4956^2 + 2068^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (28838569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89961 + ... + 90280.

Almost surely, 2^28838560 is an apocalyptic number.

28838560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28838560 is an abundant number, since it is smaller than the sum of its proper divisors (39292916).

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

28838560 is a wasteful number, since it uses less digits than its factorization.

28838560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180256 (or 180248 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28838560 is about 5370.1545601593. The cubic root of 28838560 is about 306.6605123739.

The spelling of 28838560 in words is "twenty-eight million, eight hundred thirty-eight thousand, five hundred sixty".