28279434 has 8 divisors (see below), whose sum is σ = 56558880. Its totient is φ = 9426476.

The previous prime is 28279399. The next prime is 28279441. The reversal of 28279434 is 43497282.

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

28279434 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28279392 and 28279401.

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, 2356614 + ... + 2356625.

It is an arithmetic number, because the mean of its divisors is an integer number (7069860).

Almost surely, 2^28279434 is an apocalyptic number.

28279434 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.

28279434 is a wasteful number, since it uses less digits than its factorization.

28279434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4713244.

The product of its digits is 96768, while the sum is 39.

The square root of 28279434 is about 5317.8411033050. The cubic root of 28279434 is about 304.6657055759.

The spelling of 28279434 in words is "twenty-eight million, two hundred seventy-nine thousand, four hundred thirty-four".