87212302 has 4 divisors (see below), whose sum is σ = 130818456. Its totient is φ = 43606150.

The previous prime is 87212291. The next prime is 87212303. The reversal of 87212302 is 20321278.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87212303) 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 as a sum of consecutive naturals, namely, 21803074 + ... + 21803077.

It is an arithmetic number, because the mean of its divisors is an integer number (32704614).

Almost surely, 2^87212302 is an apocalyptic number.

87212302 is a deficient number, since it is larger than the sum of its proper divisors (43606154).

87212302 is a wasteful number, since it uses less digits than its factorization.

87212302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43606153.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 87212302 is about 9338.7527004413. The cubic root of 87212302 is about 443.4648986098.

The spelling of 87212302 in words is "eighty-seven million, two hundred twelve thousand, three hundred two".