28088434 has 8 divisors (see below), whose sum is σ = 45962928. Its totient is φ = 12767460.

The previous prime is 28088413. The next prime is 28088447. The reversal of 28088434 is 43488082.

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

It is a junction number, because it is equal to n+sod(n) for n = 28088393 and 28088402.

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, 638352 + ... + 638395.

It is an arithmetic number, because the mean of its divisors is an integer number (5745366).

Almost surely, 2^28088434 is an apocalyptic number.

28088434 is a deficient number, since it is larger than the sum of its proper divisors (17874494).

28088434 is a wasteful number, since it uses less digits than its factorization.

28088434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276760.

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 28088434 is about 5299.8522620918. The cubic root of 28088434 is about 303.9782489632.

The spelling of 28088434 in words is "twenty-eight million, eighty-eight thousand, four hundred thirty-four".