28615798 has 4 divisors (see below), whose sum is σ = 42923700. Its totient is φ = 14307898.

The previous prime is 28615793. The next prime is 28615799. The reversal of 28615798 is 89751682.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28615793) by changing a digit.

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, 7153948 + ... + 7153951.

It is an arithmetic number, because the mean of its divisors is an integer number (10730925).

Almost surely, 2^28615798 is an apocalyptic number.

28615798 is a deficient number, since it is larger than the sum of its proper divisors (14307902).

28615798 is a wasteful number, since it uses less digits than its factorization.

28615798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14307901.

The product of its digits is 241920, while the sum is 46.

The square root of 28615798 is about 5349.3736081900. The cubic root of 28615798 is about 305.8688759972.

The spelling of 28615798 in words is "twenty-eight million, six hundred fifteen thousand, seven hundred ninety-eight".