212040308 has 12 divisors (see below), whose sum is σ = 371186592. Its totient is φ = 105987000.

The previous prime is 212040281. The next prime is 212040313. The reversal of 212040308 is 803040212.

It is a super-2 number, since 2×212040308² = 89922184433469728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212040308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11183 + ... + 23433.

It is an arithmetic number, because the mean of its divisors is an integer number (30932216).

Almost surely, 2^212040308 is an apocalyptic number.

It is an amenable number.

212040308 is a deficient number, since it is larger than the sum of its proper divisors (159146284).

212040308 is a wasteful number, since it uses less digits than its factorization.

212040308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16582 (or 16580 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 212040308 is about 14561.6038951758. The cubic root of 212040308 is about 596.3109835997.

The spelling of 212040308 in words is "two hundred twelve million, forty thousand, three hundred eight".