28263276 has 24 divisors (see below), whose sum is σ = 73275440. Its totient is φ = 9421056.

The previous prime is 28263271. The next prime is 28263281. The reversal of 28263276 is 67236282.

It is an interprime number because it is at equal distance from previous prime (28263271) and next prime (28263281).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28263276.

It is not an unprimeable number, because it can be changed into a prime (28263271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130741 + ... + 130956.

Almost surely, 2^28263276 is an apocalyptic number.

It is an amenable number.

28263276 is an abundant number, since it is smaller than the sum of its proper divisors (45012164).

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

28263276 is a wasteful number, since it uses less digits than its factorization.

28263276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261710 (or 261702 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 28263276 is about 5316.3216606974. The cubic root of 28263276 is about 304.6076689788.

The spelling of 28263276 in words is "twenty-eight million, two hundred sixty-three thousand, two hundred seventy-six".