28878052 has 36 divisors (see below), whose sum is σ = 59122224. Its totient is φ = 12306000.

The previous prime is 28878049. The next prime is 28878067. The reversal of 28878052 is 25087882.

It is a junction number, because it is equal to n+sod(n) for n = 28877996 and 28878014.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48903 + ... + 49489.

It is an arithmetic number, because the mean of its divisors is an integer number (1642284).

Almost surely, 2^28878052 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 28878052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29561112).

28878052 is an abundant number, since it is smaller than the sum of its proper divisors (30244172).

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

28878052 is a wasteful number, since it uses less digits than its factorization.

28878052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 40.

The square root of 28878052 is about 5373.8302913285. The cubic root of 28878052 is about 306.8004305134.

The spelling of 28878052 in words is "twenty-eight million, eight hundred seventy-eight thousand, fifty-two".