28201798 has 8 divisors (see below), whose sum is σ = 42882408. Its totient is φ = 13907664.

The previous prime is 28201787. The next prime is 28201813. The reversal of 28201798 is 89710282.

It is a sphenic number, since it is the product of 3 distinct 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 in 3 ways as a sum of consecutive naturals, for example, 96436 + ... + 96727.

It is an arithmetic number, because the mean of its divisors is an integer number (5360301).

Almost surely, 2^28201798 is an apocalyptic number.

28201798 is a deficient number, since it is larger than the sum of its proper divisors (14680610).

28201798 is a wasteful number, since it uses less digits than its factorization.

28201798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193238.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 28201798 is about 5310.5365077363. The cubic root of 28201798 is about 304.3866487790.

The spelling of 28201798 in words is "twenty-eight million, two hundred one thousand, seven hundred ninety-eight".