28852278 has 48 divisors (see below), whose sum is σ = 72298800. Its totient is φ = 7608384.

The previous prime is 28852273. The next prime is 28852297. The reversal of 28852278 is 87225882.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28852273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48 + ... + 7596.

It is an arithmetic number, because the mean of its divisors is an integer number (1506225).

Almost surely, 2^28852278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28852278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36149400).

28852278 is an abundant number, since it is smaller than the sum of its proper divisors (43446522).

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

28852278 is a wasteful number, since it uses less digits than its factorization.

28852278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7581 (or 7574 counting only the distinct ones).

The product of its digits is 143360, while the sum is 42.

The square root of 28852278 is about 5371.4316527347. The cubic root of 28852278 is about 306.7091290183.

The spelling of 28852278 in words is "twenty-eight million, eight hundred fifty-two thousand, two hundred seventy-eight".