1587145456 has 40 divisors (see below), whose sum is σ = 3322224864. Its totient is φ = 730187520.

The previous prime is 1587145453. The next prime is 1587145457. The reversal of 1587145456 is 6545417851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1587145453) 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, 53901 + ... + 77971.

Almost surely, 2^1587145456 is an apocalyptic number.

1587145456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1587145456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661112432).

1587145456 is an abundant number, since it is smaller than the sum of its proper divisors (1735079408).

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

1587145456 is a wasteful number, since it uses less digits than its factorization.

1587145456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24409 (or 24403 counting only the distinct ones).

The product of its digits is 672000, while the sum is 46.

The square root of 1587145456 is about 39838.9941640097. The cubic root of 1587145456 is about 1166.4664265137.

The spelling of 1587145456 in words is "one billion, five hundred eighty-seven million, one hundred forty-five thousand, four hundred fifty-six".