28924134 has 8 divisors (see below), whose sum is σ = 57848280. Its totient is φ = 9641376.

The previous prime is 28924109. The next prime is 28924141. The reversal of 28924134 is 43142982.

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

28924134 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28924095 and 28924104.

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, 2410339 + ... + 2410350.

It is an arithmetic number, because the mean of its divisors is an integer number (7231035).

Almost surely, 2^28924134 is an apocalyptic number.

28924134 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.

28924134 is a wasteful number, since it uses less digits than its factorization.

28924134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4820694.

The product of its digits is 13824, while the sum is 33.

The square root of 28924134 is about 5378.1162129504. The cubic root of 28924134 is about 306.9635355121.

The spelling of 28924134 in words is "twenty-eight million, nine hundred twenty-four thousand, one hundred thirty-four".