87109802 has 24 divisors (see below), whose sum is σ = 149493036. Its totient is φ = 37836288.

The previous prime is 87109741. The next prime is 87109807. The reversal of 87109802 is 20890178.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 73633561 + 13476241 = 8581^2 + 3671^2 .

It is not an unprimeable number, because it can be changed into a prime (87109807) 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 11 ways as a sum of consecutive naturals, for example, 1718 + ... + 13310.

Almost surely, 2^87109802 is an apocalyptic number.

87109802 is a deficient number, since it is larger than the sum of its proper divisors (62383234).

87109802 is a wasteful number, since it uses less digits than its factorization.

87109802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11642 (or 11625 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 87109802 is about 9333.2632021175. The cubic root of 87109802 is about 443.2910967859.

The spelling of 87109802 in words is "eighty-seven million, one hundred nine thousand, eight hundred two".