28311276 has 24 divisors (see below), whose sum is σ = 75496960. Its totient is φ = 8088912.

The previous prime is 28311271. The next prime is 28311313. The reversal of 28311276 is 67211382.

It is not an unprimeable number, because it can be changed into a prime (28311271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168436 + ... + 168603.

Almost surely, 2^28311276 is an apocalyptic number.

It is an amenable number.

28311276 is an abundant number, since it is smaller than the sum of its proper divisors (47185684).

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

28311276 is a wasteful number, since it uses less digits than its factorization.

28311276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337053 (or 337051 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 28311276 is about 5320.8341451318. The cubic root of 28311276 is about 304.7800115715.

The spelling of 28311276 in words is "twenty-eight million, three hundred eleven thousand, two hundred seventy-six".