1587280005 has 24 divisors (see below), whose sum is σ = 2809827072. Its totient is φ = 828536544.

The previous prime is 1587280003. The next prime is 1587280033. The reversal of 1587280005 is 5000827851.

It is not a de Polignac number, because 1587280005 - 2¹ = 1587280003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587280003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 373129 + ... + 377358.

It is an arithmetic number, because the mean of its divisors is an integer number (117076128).

Almost surely, 2^1587280005 is an apocalyptic number.

1587280005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1587280005 is a deficient number, since it is larger than the sum of its proper divisors (1222547067).

1587280005 is a wasteful number, since it uses less digits than its factorization.

1587280005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750545 (or 750542 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 1587280005 is about 39840.6827878238. The cubic root of 1587280005 is about 1166.4993876717.

The spelling of 1587280005 in words is "one billion, five hundred eighty-seven million, two hundred eighty thousand, five".