28311376 has 20 divisors (see below), whose sum is σ = 54937332. Its totient is φ = 14134016.

The previous prime is 28311373. The next prime is 28311379. The reversal of 28311376 is 67311382.

It is an interprime number because it is at equal distance from previous prime (28311373) and next prime (28311379).

It can be written as a sum of positive squares in 2 ways, for example, as 12787776 + 15523600 = 3576^2 + 3940^2 .

It is a super-2 number, since 2×28311376² = 1603068022026752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28311373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16746 + ... + 18358.

Almost surely, 2^28311376 is an apocalyptic number.

It is an amenable number.

28311376 is a deficient number, since it is larger than the sum of its proper divisors (26625956).

28311376 is a wasteful number, since it uses less digits than its factorization.

28311376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718 (or 2712 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 28311376 is about 5320.8435421463. The cubic root of 28311376 is about 304.7803704151.

The spelling of 28311376 in words is "twenty-eight million, three hundred eleven thousand, three hundred seventy-six".