28146030 has 96 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 6367680.

The previous prime is 28146023. The next prime is 28146031. The reversal of 28146030 is 3064182.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28146031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 420057 + ... + 420123.

It is an arithmetic number, because the mean of its divisors is an integer number (820260).

Almost surely, 2^28146030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28146030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39372480).

28146030 is an abundant number, since it is smaller than the sum of its proper divisors (50598930).

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

28146030 is a wasteful number, since it uses less digits than its factorization.

28146030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28146030 is about 5305.2832158142. The cubic root of 28146030 is about 304.1858786472.

The spelling of 28146030 in words is "twenty-eight million, one hundred forty-six thousand, thirty".