28988646 has 8 divisors (see below), whose sum is σ = 57977304. Its totient is φ = 9662880.

The previous prime is 28988633. The next prime is 28988653. The reversal of 28988646 is 64688982.

It is a happy number.

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

28988646 is an admirable number.

It is a congruent number.

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, 2415715 + ... + 2415726.

It is an arithmetic number, because the mean of its divisors is an integer number (7247163).

Almost surely, 2^28988646 is an apocalyptic number.

28988646 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.

28988646 is a wasteful number, since it uses less digits than its factorization.

28988646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831446.

The product of its digits is 1327104, while the sum is 51.

The square root of 28988646 is about 5384.1105114958. The cubic root of 28988646 is about 307.1915818345.

The spelling of 28988646 in words is "twenty-eight million, nine hundred eighty-eight thousand, six hundred forty-six".