487981672 has 16 divisors (see below), whose sum is σ = 937282500. Its totient is φ = 238039680.

The previous prime is 487981643. The next prime is 487981679. The reversal of 487981672 is 276189784.

It can be written as a sum of positive squares in 2 ways, for example, as 486378916 + 1602756 = 22054^2 + 1266^2 .

It is a super-2 number, since 2×487981672² = 476252224415831168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (487981679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743547 + ... + 744202.

Almost surely, 2^487981672 is an apocalyptic number.

It is an amenable number.

487981672 is a deficient number, since it is larger than the sum of its proper divisors (449300828).

487981672 is a wasteful number, since it uses less digits than its factorization.

487981672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487796 (or 1487792 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 487981672 is about 22090.3071956911. The cubic root of 487981672 is about 787.2895801964.

The spelling of 487981672 in words is "four hundred eighty-seven million, nine hundred eighty-one thousand, six hundred seventy-two".