28710828 has 24 divisors (see below), whose sum is σ = 74435760. Its totient is φ = 9570240.

The previous prime is 28710823. The next prime is 28710833. The reversal of 28710828 is 82801782.

It is an interprime number because it is at equal distance from previous prime (28710823) and next prime (28710833).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 28710792 and 28710801.

It is not an unprimeable number, because it can be changed into a prime (28710821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132813 + ... + 133028.

It is an arithmetic number, because the mean of its divisors is an integer number (3101490).

Almost surely, 2^28710828 is an apocalyptic number.

It is an amenable number.

28710828 is an abundant number, since it is smaller than the sum of its proper divisors (45724932).

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

28710828 is a wasteful number, since it uses less digits than its factorization.

28710828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265854 (or 265846 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 36.

The square root of 28710828 is about 5358.2485944570. The cubic root of 28710828 is about 306.2070878094.

The spelling of 28710828 in words is "twenty-eight million, seven hundred ten thousand, eight hundred twenty-eight".