288891001 has 8 divisors (see below), whose sum is σ = 333367424. Its totient is φ = 245216160.

The previous prime is 288890993. The next prime is 288891019. The reversal of 288891001 is 100198882.

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

It is not a de Polignac number, because 288891001 - 2³ = 288890993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288891041) 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, 199620 + ... + 201061.

It is an arithmetic number, because the mean of its divisors is an integer number (41670928).

Almost surely, 2^288891001 is an apocalyptic number.

It is an amenable number.

288891001 is a deficient number, since it is larger than the sum of its proper divisors (44476423).

288891001 is a wasteful number, since it uses less digits than its factorization.

288891001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400791.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 288891001 is about 16996.7938447226. The cubic root of 288891001 is about 661.0657719369.

It can be divided in two parts, 28889 and 1001, that added together give a triangular number (29890 = T₂₄₄).

The spelling of 288891001 in words is "two hundred eighty-eight million, eight hundred ninety-one thousand, one".