288420881 has 8 divisors (see below), whose sum is σ = 329731584. Its totient is φ = 247137120.

The previous prime is 288420829. The next prime is 288420901. The reversal of 288420881 is 188024882.

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 288420881 - 2¹⁴ = 288404497 is a prime.

It is a super-2 number, since 2×288420881² = 166373209193632322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (288420581) 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, 28541 + ... + 37301.

It is an arithmetic number, because the mean of its divisors is an integer number (41216448).

Almost surely, 2^288420881 is an apocalyptic number.

It is an amenable number.

288420881 is a deficient number, since it is larger than the sum of its proper divisors (41310703).

288420881 is an equidigital number, since it uses as much as digits as its factorization.

288420881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13471.

The product of its (nonzero) digits is 65536, while the sum is 41.

The square root of 288420881 is about 16982.9585467315. The cubic root of 288420881 is about 660.7069872828.

The spelling of 288420881 in words is "two hundred eighty-eight million, four hundred twenty thousand, eight hundred eighty-one".