1487257992 has 96 divisors (see below), whose sum is σ = 4403486880. Its totient is φ = 449729280.

The previous prime is 1487257979. The next prime is 1487258033. The reversal of 1487257992 is 2997527841.

1487257992 is a `hidden beast` number, since 1 + 487 + 2 + 5 + 79 + 92 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 431508 + ... + 434940.

It is an arithmetic number, because the mean of its divisors is an integer number (45869655).

Almost surely, 2^1487257992 is an apocalyptic number.

1487257992 is a gapful number since it is divisible by the number (12) 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 1487257992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2201743440).

1487257992 is an abundant number, since it is smaller than the sum of its proper divisors (2916228888).

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

1487257992 is a wasteful number, since it uses less digits than its factorization.

1487257992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003 (or 3996 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 1487257992 is about 38564.9840139990. The cubic root of 1487257992 is about 1141.4636969903.

The spelling of 1487257992 in words is "one billion, four hundred eighty-seven million, two hundred fifty-seven thousand, nine hundred ninety-two".