87478736 has 40 divisors (see below), whose sum is σ = 188916480. Its totient is φ = 38997504.

The previous prime is 87478681. The next prime is 87478739. The reversal of 87478736 is 63787478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87478739) 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 7 ways as a sum of consecutive naturals, for example, 3296 + ... + 13631.

It is an arithmetic number, because the mean of its divisors is an integer number (4722912).

Almost surely, 2^87478736 is an apocalyptic number.

It is an amenable number.

87478736 is an abundant number, since it is smaller than the sum of its proper divisors (101437744).

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

87478736 is a wasteful number, since it uses less digits than its factorization.

87478736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16971 (or 16965 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 50.

The square root of 87478736 is about 9353.0067892630. The cubic root of 87478736 is about 443.9160353088.

The spelling of 87478736 in words is "eighty-seven million, four hundred seventy-eight thousand, seven hundred thirty-six".