212079740 has 12 divisors (see below), whose sum is σ = 445367496. Its totient is φ = 84831888.

The previous prime is 212079727. The next prime is 212079779. The reversal of 212079740 is 47970212.

212079740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212079740² = 89955632236935200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212079697 and 212079706.

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, 5301974 + ... + 5302013.

It is an arithmetic number, because the mean of its divisors is an integer number (37113958).

Almost surely, 2^212079740 is an apocalyptic number.

212079740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212079740 is an abundant number, since it is smaller than the sum of its proper divisors (233287756).

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

212079740 is a wasteful number, since it uses less digits than its factorization.

212079740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10603996 (or 10603994 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 212079740 is about 14562.9578039628. The cubic root of 212079740 is about 596.3479455614.

The spelling of 212079740 in words is "two hundred twelve million, seventy-nine thousand, seven hundred forty".