28708662 has 8 divisors (see below), whose sum is σ = 57417336. Its totient is φ = 9569552.

The previous prime is 28708661. The next prime is 28708717. The reversal of 28708662 is 26680782.

It is a sphenic number, since it is the product of 3 distinct primes.

28708662 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28708662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28708661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2392383 + ... + 2392394.

It is an arithmetic number, because the mean of its divisors is an integer number (7177167).

Almost surely, 2^28708662 is an apocalyptic number.

28708662 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28708662 is a wasteful number, since it uses less digits than its factorization.

28708662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784782.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 28708662 is about 5358.0464723629. The cubic root of 28708662 is about 306.1993873322.

The spelling of 28708662 in words is "twenty-eight million, seven hundred eight thousand, six hundred sixty-two".