28201268 has 12 divisors (see below), whose sum is σ = 49399812. Its totient is φ = 14087040.

The previous prime is 28201267. The next prime is 28201273. The reversal of 28201268 is 86210282.

It can be written as a sum of positive squares in 2 ways, for example, as 13162384 + 15038884 = 3628^2 + 3878^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28201268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28201267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2348 + ... + 7868.

It is an arithmetic number, because the mean of its divisors is an integer number (4116651).

Almost surely, 2^28201268 is an apocalyptic number.

It is an amenable number.

28201268 is a deficient number, since it is larger than the sum of its proper divisors (21198544).

28201268 is a wasteful number, since it uses less digits than its factorization.

28201268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6802 (or 6800 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 28201268 is about 5310.4866067056. The cubic root of 28201268 is about 304.3847419746.

The spelling of 28201268 in words is "twenty-eight million, two hundred one thousand, two hundred sixty-eight".