87212010 has 16 divisors (see below), whose sum is σ = 209308896. Its totient is φ = 23256528.

The previous prime is 87211991. The next prime is 87212011. The reversal of 87212010 is 1021278.

It is not an unprimeable number, because it can be changed into a prime (87212011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1453504 + ... + 1453563.

It is an arithmetic number, because the mean of its divisors is an integer number (13081806).

Almost surely, 2^87212010 is an apocalyptic number.

87212010 is an abundant number, since it is smaller than the sum of its proper divisors (122096886).

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

87212010 is a wasteful number, since it uses less digits than its factorization.

87212010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2907077.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 87212010 is about 9338.7370666488. The cubic root of 87212010 is about 443.4644036800.

Adding to 87212010 its reverse (1021278), we get a palindrome (88233288).

It can be divided in two parts, 8721 and 2010, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 87212010 in words is "eighty-seven million, two hundred twelve thousand, ten".