212069540 has 12 divisors (see below), whose sum is σ = 445346076. Its totient is φ = 84827808.

The previous prime is 212069537. The next prime is 212069549. The reversal of 212069540 is 45960212.

It is a happy number.

212069540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 104366656 + 107702884 = 10216^2 + 10378^2 .

It is not an unprimeable number, because it can be changed into a prime (212069549) 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, 5301719 + ... + 5301758.

It is an arithmetic number, because the mean of its divisors is an integer number (37112173).

Almost surely, 2^212069540 is an apocalyptic number.

212069540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212069540 is an abundant number, since it is smaller than the sum of its proper divisors (233276536).

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

212069540 is a wasteful number, since it uses less digits than its factorization.

212069540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10603486 (or 10603484 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 212069540 is about 14562.6075961690. The cubic root of 212069540 is about 596.3383849333.

The spelling of 212069540 in words is "two hundred twelve million, sixty-nine thousand, five hundred forty".