28375478 has 8 divisors (see below), whose sum is σ = 43936320. Its totient is φ = 13730040.

The previous prime is 28375469. The next prime is 28375513. The reversal of 28375478 is 87457382.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

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, 228773 + ... + 228896.

It is an arithmetic number, because the mean of its divisors is an integer number (5492040).

Almost surely, 2^28375478 is an apocalyptic number.

28375478 is a deficient number, since it is larger than the sum of its proper divisors (15560842).

28375478 is a wasteful number, since it uses less digits than its factorization.

28375478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457702.

The product of its digits is 376320, while the sum is 44.

The square root of 28375478 is about 5326.8638052798. The cubic root of 28375478 is about 305.0102227157.

The spelling of 28375478 in words is "twenty-eight million, three hundred seventy-five thousand, four hundred seventy-eight".