288390545 has 16 divisors (see below), whose sum is σ = 348986880. Its totient is φ = 228777024.

The previous prime is 288390539. The next prime is 288390589. The reversal of 288390545 is 545093882.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-288390545 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 288390496 and 288390505.

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 15 ways as a sum of consecutive naturals, for example, 445412 + ... + 446058.

It is an arithmetic number, because the mean of its divisors is an integer number (21811680).

Almost surely, 2^288390545 is an apocalyptic number.

It is an amenable number.

288390545 is a deficient number, since it is larger than the sum of its proper divisors (60596335).

288390545 is a wasteful number, since it uses less digits than its factorization.

288390545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 345600, while the sum is 44.

The square root of 288390545 is about 16982.0653926429. The cubic root of 288390545 is about 660.6838221663.

The spelling of 288390545 in words is "two hundred eighty-eight million, three hundred ninety thousand, five hundred forty-five".