28603478 has 4 divisors (see below), whose sum is σ = 42905220. Its totient is φ = 14301738.

The previous prime is 28603459. The next prime is 28603481. The reversal of 28603478 is 87430682.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7150868 + ... + 7150871.

It is an arithmetic number, because the mean of its divisors is an integer number (10726305).

Almost surely, 2^28603478 is an apocalyptic number.

28603478 is a deficient number, since it is larger than the sum of its proper divisors (14301742).

28603478 is a wasteful number, since it uses less digits than its factorization.

28603478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14301741.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 28603478 is about 5348.2219475261. The cubic root of 28603478 is about 305.8249743096.

The spelling of 28603478 in words is "twenty-eight million, six hundred three thousand, four hundred seventy-eight".