28446270 has 64 divisors (see below), whose sum is σ = 72912960. Its totient is φ = 7102464.

The previous prime is 28446259. The next prime is 28446277. The reversal of 28446270 is 7264482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28446277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147294 + ... + 147486.

It is an arithmetic number, because the mean of its divisors is an integer number (1139265).

Almost surely, 2^28446270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28446270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36456480).

28446270 is an abundant number, since it is smaller than the sum of its proper divisors (44466690).

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

28446270 is a wasteful number, since it uses less digits than its factorization.

28446270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 28446270 is about 5333.5044764207. The cubic root of 28446270 is about 305.2636616436.

The spelling of 28446270 in words is "twenty-eight million, four hundred forty-six thousand, two hundred seventy".