28975376 has 20 divisors (see below), whose sum is σ = 56311500. Its totient is φ = 14443392.

The previous prime is 28975367. The next prime is 28975381. The reversal of 28975376 is 67357982.

It can be written as a sum of positive squares in 2 ways, for example, as 22090000 + 6885376 = 4700^2 + 2624^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 28975376.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2990 + ... + 8178.

It is an arithmetic number, because the mean of its divisors is an integer number (2815575).

Almost surely, 2^28975376 is an apocalyptic number.

It is an amenable number.

28975376 is a deficient number, since it is larger than the sum of its proper divisors (27336124).

28975376 is a wasteful number, since it uses less digits than its factorization.

28975376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546 (or 5540 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 28975376 is about 5382.8780406024. The cubic root of 28975376 is about 307.1447007847.

The spelling of 28975376 in words is "twenty-eight million, nine hundred seventy-five thousand, three hundred seventy-six".