28083478 has 8 divisors (see below), whose sum is σ = 42184440. Its totient is φ = 14022000.

The previous prime is 28083457. The next prime is 28083479. The reversal of 28083478 is 87438082.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28083478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28083479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8023 + ... + 10978.

It is an arithmetic number, because the mean of its divisors is an integer number (5273055).

Almost surely, 2^28083478 is an apocalyptic number.

28083478 is a deficient number, since it is larger than the sum of its proper divisors (14100962).

28083478 is a wasteful number, since it uses less digits than its factorization.

28083478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19742.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 28083478 is about 5299.3846812625. The cubic root of 28083478 is about 303.9603696608.

It can be divided in two parts, 28083 and 478, that added together give a 4-th power (28561 = 13⁴).

The spelling of 28083478 in words is "twenty-eight million, eighty-three thousand, four hundred seventy-eight".