87049988 has 6 divisors (see below), whose sum is σ = 152337486. Its totient is φ = 43524992.

The previous prime is 87049973. The next prime is 87049993. The reversal of 87049988 is 88994078.

It can be written as a sum of positive squares in only one way, i.e., 69089344 + 17960644 = 8312^2 + 4238^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10881245 + ... + 10881252.

It is an arithmetic number, because the mean of its divisors is an integer number (25389581).

Almost surely, 2^87049988 is an apocalyptic number.

It is an amenable number.

87049988 is a deficient number, since it is larger than the sum of its proper divisors (65287498).

87049988 is a wasteful number, since it uses less digits than its factorization.

87049988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21762501 (or 21762499 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 87049988 is about 9330.0583063559. The cubic root of 87049988 is about 443.1896115178.

The spelling of 87049988 in words is "eighty-seven million, forty-nine thousand, nine hundred eighty-eight".