212364240 has 160 divisors (see below), whose sum is σ = 723275136. Its totient is φ = 51118080.

The previous prime is 212364239. The next prime is 212364259. The reversal of 212364240 is 42463212.

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 212364240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 678324 + ... + 678636.

Almost surely, 2^212364240 is an apocalyptic number.

212364240 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 212364240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361637568).

212364240 is an abundant number, since it is smaller than the sum of its proper divisors (510910896).

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

212364240 is a wasteful number, since it uses less digits than its factorization.

212364240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597 (or 591 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 212364240 is about 14572.7224635618. The cubic root of 212364240 is about 596.6144886733.

The spelling of 212364240 in words is "two hundred twelve million, three hundred sixty-four thousand, two hundred forty".