387571212 has 144 divisors (see below), whose sum is σ = 1171602432. Its totient is φ = 105719040.

The previous prime is 387571211. The next prime is 387571241. The reversal of 387571212 is 212175783.

387571212 is a `hidden beast` number, since 3 + 87 + 571 + 2 + 1 + 2 = 666.

It is a super-2 number, since 2×387571212² = 300422888742297888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (387571211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 508912 + ... + 509672.

It is an arithmetic number, because the mean of its divisors is an integer number (8136128).

Almost surely, 2^387571212 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 387571212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585801216).

387571212 is an abundant number, since it is smaller than the sum of its proper divisors (784031220).

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

387571212 is a wasteful number, since it uses less digits than its factorization.

387571212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868 (or 863 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 387571212 is about 19686.8283885445. The cubic root of 387571212 is about 729.0945250482.

It can be divided in two parts, 387571 and 212, that added together give a palindrome (387783).

The spelling of 387571212 in words is "three hundred eighty-seven million, five hundred seventy-one thousand, two hundred twelve".