28088977 has 8 divisors (see below), whose sum is σ = 32884992. Its totient is φ = 23488800.

The previous prime is 28088959. The next prime is 28088989. The reversal of 28088977 is 77988082.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28088977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28088977.

It is not an unprimeable number, because it can be changed into a prime (28088917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48649 + ... + 49222.

It is an arithmetic number, because the mean of its divisors is an integer number (4110624).

Almost surely, 2^28088977 is an apocalyptic number.

It is an amenable number.

28088977 is a deficient number, since it is larger than the sum of its proper divisors (4796015).

28088977 is an equidigital number, since it uses as much as digits as its factorization.

28088977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97919.

The product of its (nonzero) digits is 451584, while the sum is 49.

The square root of 28088977 is about 5299.9034896873. The cubic root of 28088977 is about 303.9802077661.

The spelling of 28088977 in words is "twenty-eight million, eighty-eight thousand, nine hundred seventy-seven".