28788122 has 8 divisors (see below), whose sum is σ = 47107872. Its totient is φ = 13085500.

The previous prime is 28788103. The next prime is 28788139. The reversal of 28788122 is 22188782.

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

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, 654254 + ... + 654297.

It is an arithmetic number, because the mean of its divisors is an integer number (5888484).

Almost surely, 2^28788122 is an apocalyptic number.

28788122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28788122 is a deficient number, since it is larger than the sum of its proper divisors (18319750).

28788122 is a wasteful number, since it uses less digits than its factorization.

28788122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308564.

The product of its digits is 28672, while the sum is 38.

The square root of 28788122 is about 5365.4563645602. The cubic root of 28788122 is about 306.4816272395.

The spelling of 28788122 in words is "twenty-eight million, seven hundred eighty-eight thousand, one hundred twenty-two".