288028731 has 8 divisors (see below), whose sum is σ = 393405264. Its totient is φ = 187335680.

The previous prime is 288028729. The next prime is 288028759. The reversal of 288028731 is 137820882.

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 288028731 - 2¹ = 288028729 is a prime.

It is a super-2 number, since 2×288028731² = 165921099762940722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 288028731.

It is not an unprimeable number, because it can be changed into a prime (288020731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170726 + ... + 1170971.

It is an arithmetic number, because the mean of its divisors is an integer number (49175658).

Almost surely, 2^288028731 is an apocalyptic number.

288028731 is a deficient number, since it is larger than the sum of its proper divisors (105376533).

288028731 is a wasteful number, since it uses less digits than its factorization.

288028731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341741.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 288028731 is about 16971.4092225719. The cubic root of 288028731 is about 660.4074091579.

The spelling of 288028731 in words is "two hundred eighty-eight million, twenty-eight thousand, seven hundred thirty-one".