28871976 has 48 divisors (see below), whose sum is σ = 83967840. Its totient is φ = 8248800.

The previous prime is 28871957. The next prime is 28871977. The reversal of 28871976 is 67917882.

It is not an unprimeable number, because it can be changed into a prime (28871977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11100 + ... + 13451.

It is an arithmetic number, because the mean of its divisors is an integer number (1749330).

Almost surely, 2^28871976 is an apocalyptic number.

It is an amenable number.

28871976 is an abundant number, since it is smaller than the sum of its proper divisors (55095864).

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

28871976 is a wasteful number, since it uses less digits than its factorization.

28871976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24574 (or 24563 counting only the distinct ones).

The product of its digits is 338688, while the sum is 48.

The square root of 28871976 is about 5373.2649292586. The cubic root of 28871976 is about 306.7789118624.

The spelling of 28871976 in words is "twenty-eight million, eight hundred seventy-one thousand, nine hundred seventy-six".