28471798 has 4 divisors (see below), whose sum is σ = 42707700. Its totient is φ = 14235898.

The previous prime is 28471789. The next prime is 28471829. The reversal of 28471798 is 89717482.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 7117948 + ... + 7117951.

It is an arithmetic number, because the mean of its divisors is an integer number (10676925).

Almost surely, 2^28471798 is an apocalyptic number.

28471798 is a deficient number, since it is larger than the sum of its proper divisors (14235902).

28471798 is a wasteful number, since it uses less digits than its factorization.

28471798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14235901.

The product of its digits is 225792, while the sum is 46.

The square root of 28471798 is about 5335.8971129511. The cubic root of 28471798 is about 305.3549500130.

The spelling of 28471798 in words is "twenty-eight million, four hundred seventy-one thousand, seven hundred ninety-eight".