28680452 has 6 divisors (see below), whose sum is σ = 50190798. Its totient is φ = 14340224.

The previous prime is 28680437. The next prime is 28680461. The reversal of 28680452 is 25408682.

It can be written as a sum of positive squares in only one way, i.e., 27206656 + 1473796 = 5216^2 + 1214^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3585053 + ... + 3585060.

It is an arithmetic number, because the mean of its divisors is an integer number (8365133).

Almost surely, 2^28680452 is an apocalyptic number.

It is an amenable number.

28680452 is a deficient number, since it is larger than the sum of its proper divisors (21510346).

28680452 is a wasteful number, since it uses less digits than its factorization.

28680452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7170117 (or 7170115 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 28680452 is about 5355.4133360554. The cubic root of 28680452 is about 306.0990608692.

The spelling of 28680452 in words is "twenty-eight million, six hundred eighty thousand, four hundred fifty-two".