87463728 has 60 divisors (see below), whose sum is σ = 267034248. Its totient is φ = 26503680.

The previous prime is 87463721. The next prime is 87463729. The reversal of 87463728 is 82736478.

It is a happy number.

87463728 is a `hidden beast` number, since 8 + 7 + 4 + 637 + 2 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (87463721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26025 + ... + 29192.

Almost surely, 2^87463728 is an apocalyptic number.

87463728 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

87463728 is an abundant number, since it is smaller than the sum of its proper divisors (179570520).

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

87463728 is a wasteful number, since it uses less digits than its factorization.

87463728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55242 (or 55233 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 87463728 is about 9352.2044460116. The cubic root of 87463728 is about 443.8906475281.

The spelling of 87463728 in words is "eighty-seven million, four hundred sixty-three thousand, seven hundred twenty-eight".