28835388 has 36 divisors (see below), whose sum is σ = 76727560. Its totient is φ = 9105696.

The previous prime is 28835357. The next prime is 28835431. The reversal of 28835388 is 88353882.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×28835388² = 1662959202221088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20395 + ... + 21762.

Almost surely, 2^28835388 is an apocalyptic number.

It is an amenable number.

28835388 is an abundant number, since it is smaller than the sum of its proper divisors (47892172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28835388 is a wasteful number, since it uses less digits than its factorization.

28835388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42186 (or 42181 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 28835388 is about 5369.8592160316. The cubic root of 28835388 is about 306.6492685992.

The spelling of 28835388 in words is "twenty-eight million, eight hundred thirty-five thousand, three hundred eighty-eight".