1587201540 has 24 divisors (see below), whose sum is σ = 4444164480. Its totient is φ = 423253728.

The previous prime is 1587201527. The next prime is 1587201557. The reversal of 1587201540 is 451027851.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13226620 + ... + 13226739.

It is an arithmetic number, because the mean of its divisors is an integer number (185173520).

Almost surely, 2^1587201540 is an apocalyptic number.

1587201540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1587201540 is an abundant number, since it is smaller than the sum of its proper divisors (2856962940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1587201540 is a wasteful number, since it uses less digits than its factorization.

1587201540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26453371 (or 26453369 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The square root of 1587201540 is about 39839.6980410244. The cubic root of 1587201540 is about 1166.4801659250.

The spelling of 1587201540 in words is "one billion, five hundred eighty-seven million, two hundred one thousand, five hundred forty".