87445212 has 48 divisors (see below), whose sum is σ = 217258272. Its totient is φ = 27279360.

The previous prime is 87445181. The next prime is 87445217. The reversal of 87445212 is 21254478.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87445217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38262 + ... + 40482.

It is an arithmetic number, because the mean of its divisors is an integer number (4526214).

Almost surely, 2^87445212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87445212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108629136).

87445212 is an abundant number, since it is smaller than the sum of its proper divisors (129813060).

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

87445212 is a wasteful number, since it uses less digits than its factorization.

87445212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438 (or 2436 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 87445212 is about 9351.2144665813. The cubic root of 87445212 is about 443.8593215546.

The spelling of 87445212 in words is "eighty-seven million, four hundred forty-five thousand, two hundred twelve".