28963408 has 10 divisors (see below), whose sum is σ = 56116634. Its totient is φ = 14481696.

The previous prime is 28963379. The next prime is 28963409. The reversal of 28963408 is 80436982.

It can be written as a sum of positive squares in only one way, i.e., 28174864 + 788544 = 5308^2 + 888^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28963409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905091 + ... + 905122.

Almost surely, 2^28963408 is an apocalyptic number.

It is an amenable number.

28963408 is a deficient number, since it is larger than the sum of its proper divisors (27153226).

28963408 is a wasteful number, since it uses less digits than its factorization.

28963408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810221 (or 1810215 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 28963408 is about 5381.7662528207. The cubic root of 28963408 is about 307.1024072410.

The spelling of 28963408 in words is "twenty-eight million, nine hundred sixty-three thousand, four hundred eight".