28828894 has 8 divisors (see below), whose sum is σ = 43888968. Its totient is φ = 14199240.

The previous prime is 28828861. The next prime is 28828901. The reversal of 28828894 is 49882882.

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

It is a super-2 number, since 2×28828894² = 1662210258526472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107437 + ... + 107704.

It is an arithmetic number, because the mean of its divisors is an integer number (5486121).

Almost surely, 2^28828894 is an apocalyptic number.

28828894 is a deficient number, since it is larger than the sum of its proper divisors (15060074).

28828894 is a wasteful number, since it uses less digits than its factorization.

28828894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215210.

The product of its digits is 589824, while the sum is 49.

The square root of 28828894 is about 5369.2545106374. The cubic root of 28828894 is about 306.6262467731.

It can be divided in two parts, 288288 and 94, that multiplied together give a palindrome (27099072).

The spelling of 28828894 in words is "twenty-eight million, eight hundred twenty-eight thousand, eight hundred ninety-four".