1587479040 has 640 divisors, whose sum is σ = 6858846720. Its totient is φ = 339738624.

The previous prime is 1587479029. The next prime is 1587479059. The reversal of 1587479040 is 409747851.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8225184 + ... + 8225376.

It is an arithmetic number, because the mean of its divisors is an integer number (10716948).

Almost surely, 2^1587479040 is an apocalyptic number.

1587479040 is a gapful number since it is divisible by the number (10) 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 1587479040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3429423360).

1587479040 is an abundant number, since it is smaller than the sum of its proper divisors (5271367680).

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

1587479040 is a wasteful number, since it uses less digits than its factorization.

1587479040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1587479040 is about 39843.1805959313. The cubic root of 1587479040 is about 1166.5481428800.

The spelling of 1587479040 in words is "one billion, five hundred eighty-seven million, four hundred seventy-nine thousand, forty".