212607240 has 64 divisors (see below), whose sum is σ = 643507200. Its totient is φ = 56189952.

The previous prime is 212607233. The next prime is 212607277. The reversal of 212607240 is 42706212.

212607240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 212607240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5721 + ... + 21399.

It is an arithmetic number, because the mean of its divisors is an integer number (10054800).

Almost surely, 2^212607240 is an apocalyptic number.

212607240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212607240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321753600).

212607240 is an abundant number, since it is smaller than the sum of its proper divisors (430899960).

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

212607240 is a wasteful number, since it uses less digits than its factorization.

212607240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15806 (or 15802 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 212607240 is about 14581.0575748126. The cubic root of 212607240 is about 596.8419627192.

The spelling of 212607240 in words is "two hundred twelve million, six hundred seven thousand, two hundred forty".