28450686 has 32 divisors (see below), whose sum is σ = 62270208. Its totient is φ = 8594240.

The previous prime is 28450663. The next prime is 28450699. The reversal of 28450686 is 68605482.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32770 + ... + 33626.

It is an arithmetic number, because the mean of its divisors is an integer number (1945944).

Almost surely, 2^28450686 is an apocalyptic number.

28450686 is an abundant number, since it is smaller than the sum of its proper divisors (33819522).

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

28450686 is a wasteful number, since it uses less digits than its factorization.

28450686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 28450686 is about 5333.9184470706. The cubic root of 28450686 is about 305.2794572070.

The spelling of 28450686 in words is "twenty-eight million, four hundred fifty thousand, six hundred eighty-six".