28659408 has 40 divisors (see below), whose sum is σ = 74527968. Its totient is φ = 9489792.

The previous prime is 28659377. The next prime is 28659409. The reversal of 28659408 is 80495682.

It is a self number, because there is not a number n which added to its sum of digits gives 28659408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28659409) 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 in 7 ways as a sum of consecutive naturals, for example, 5635 + ... + 9437.

Almost surely, 2^28659408 is an apocalyptic number.

It is an amenable number.

28659408 is an abundant number, since it is smaller than the sum of its proper divisors (45868560).

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

28659408 is a wasteful number, since it uses less digits than its factorization.

28659408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971 (or 3965 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 28659408 is about 5353.4482345494. The cubic root of 28659408 is about 306.0241768244.

The spelling of 28659408 in words is "twenty-eight million, six hundred fifty-nine thousand, four hundred eight".