387288005 has 18 divisors (see below), whose sum is σ = 503989686. Its totient is φ = 285574848.

The previous prime is 387287959. The next prime is 387288019. The reversal of 387288005 is 500882783.

It can be written as a sum of positive squares in 9 ways, for example, as 8168164 + 379119841 = 2858^2 + 19471^2 .

It is not a de Polignac number, because 387288005 - 2⁸ = 387287749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 571727 + ... + 572403.

It is an arithmetic number, because the mean of its divisors is an integer number (27999427).

Almost surely, 2^387288005 is an apocalyptic number.

It is an amenable number.

387288005 is a deficient number, since it is larger than the sum of its proper divisors (116701681).

387288005 is an frugal number, since it uses more digits than its factorization.

387288005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 695 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 387288005 is about 19679.6342699756. The cubic root of 387288005 is about 728.9168931863.

The spelling of 387288005 in words is "three hundred eighty-seven million, two hundred eighty-eight thousand, five".