28345801 has 8 divisors (see below), whose sum is σ = 31677408. Its totient is φ = 25140000.

The previous prime is 28345781. The next prime is 28345813. The reversal of 28345801 is 10854382.

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

It is a cyclic number.

It is not a de Polignac number, because 28345801 - 2¹³ = 28337609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28345861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30975 + ... + 31876.

It is an arithmetic number, because the mean of its divisors is an integer number (3959676).

Almost surely, 2^28345801 is an apocalyptic number.

It is an amenable number.

28345801 is a deficient number, since it is larger than the sum of its proper divisors (3331607).

28345801 is a wasteful number, since it uses less digits than its factorization.

28345801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62903.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 28345801 is about 5324.0774787751. The cubic root of 28345801 is about 304.9038521625.

The spelling of 28345801 in words is "twenty-eight million, three hundred forty-five thousand, eight hundred one".