212560340 has 12 divisors (see below), whose sum is σ = 446376756. Its totient is φ = 85024128.

The previous prime is 212560339. The next prime is 212560349. The reversal of 212560340 is 43065212.

It can be written as a sum of positive squares in 2 ways, for example, as 83101456 + 129458884 = 9116^2 + 11378^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212560349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5313989 + ... + 5314028.

It is an arithmetic number, because the mean of its divisors is an integer number (37198063).

Almost surely, 2^212560340 is an apocalyptic number.

212560340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212560340 is an abundant number, since it is smaller than the sum of its proper divisors (233816416).

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

212560340 is a wasteful number, since it uses less digits than its factorization.

212560340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10628026 (or 10628024 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 212560340 is about 14579.4492351392. The cubic root of 212560340 is about 596.7980727955.

The spelling of 212560340 in words is "two hundred twelve million, five hundred sixty thousand, three hundred forty".