212711004 has 144 divisors (see below), whose sum is σ = 654151680. Its totient is φ = 57438720.

The previous prime is 212710973. The next prime is 212711011. The reversal of 212711004 is 400117212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 127077 + ... + 128739.

It is an arithmetic number, because the mean of its divisors is an integer number (4542720).

Almost surely, 2^212711004 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 212711004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327075840).

212711004 is an abundant number, since it is smaller than the sum of its proper divisors (441440676).

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

212711004 is a wasteful number, since it uses less digits than its factorization.

212711004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1715 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 212711004 is about 14584.6153188900. The cubic root of 212711004 is about 596.9390441371.

Adding to 212711004 its reverse (400117212), we get a palindrome (612828216).

It can be divided in two parts, 2127 and 11004, that added together give a palindrome (13131).

The spelling of 212711004 in words is "two hundred twelve million, seven hundred eleven thousand, four".