28810536 has 128 divisors (see below), whose sum is σ = 82252800. Its totient is φ = 8363520.

The previous prime is 28810519. The next prime is 28810567. The reversal of 28810536 is 63501882.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28810497 and 28810506.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429975 + ... + 430041.

It is an arithmetic number, because the mean of its divisors is an integer number (642600).

Almost surely, 2^28810536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28810536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41126400).

28810536 is an abundant number, since it is smaller than the sum of its proper divisors (53442264).

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

28810536 is a wasteful number, since it uses less digits than its factorization.

28810536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28810536 is about 5367.5446900794. The cubic root of 28810536 is about 306.5611472714.

The spelling of 28810536 in words is "twenty-eight million, eight hundred ten thousand, five hundred thirty-six".