28146204 has 72 divisors (see below), whose sum is σ = 77051520. Its totient is φ = 8967024.

The previous prime is 28146191. The next prime is 28146221. The reversal of 28146204 is 40264182.

28146204 is a `hidden beast` number, since 28 + 14 + 620 + 4 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21727 + ... + 22985.

It is an arithmetic number, because the mean of its divisors is an integer number (1070160).

Almost surely, 2^28146204 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 28146204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38525760).

28146204 is an abundant number, since it is smaller than the sum of its proper divisors (48905316).

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

28146204 is a wasteful number, since it uses less digits than its factorization.

28146204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1301 (or 1287 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28146204 is about 5305.2996145364. The cubic root of 28146204 is about 304.1865054761.

The spelling of 28146204 in words is "twenty-eight million, one hundred forty-six thousand, two hundred four".