28132650 has 192 divisors, whose sum is σ = 95827200. Its totient is φ = 5909760.

The previous prime is 28132631. The next prime is 28132661. The reversal of 28132650 is 5623182.

28132650 is a `hidden beast` number, since 2 + 8 + 1 + 3 + 2 + 650 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 122736 + ... + 122964.

It is an arithmetic number, because the mean of its divisors is an integer number (499100).

Almost surely, 2^28132650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28132650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47913600).

28132650 is an abundant number, since it is smaller than the sum of its proper divisors (67694550).

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

28132650 is a wasteful number, since it uses less digits than its factorization.

28132650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 259 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28132650 is about 5304.0220587777. The cubic root of 28132650 is about 304.1376699282.

It can be divided in two parts, 28132 and 650, that added together give a palindrome (28782).

The spelling of 28132650 in words is "twenty-eight million, one hundred thirty-two thousand, six hundred fifty".