212392940 has 12 divisors (see below), whose sum is σ = 446025216. Its totient is φ = 84957168.

The previous prime is 212392927. The next prime is 212392969. The reversal of 212392940 is 49293212.

212392940 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 2×212392940² = 90221521923687200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212392897 and 212392906.

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, 5309804 + ... + 5309843.

It is an arithmetic number, because the mean of its divisors is an integer number (37168768).

Almost surely, 2^212392940 is an apocalyptic number.

212392940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212392940 is an abundant number, since it is smaller than the sum of its proper divisors (233632276).

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

212392940 is a wasteful number, since it uses less digits than its factorization.

212392940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10619656 (or 10619654 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 212392940 is about 14573.7071467763. The cubic root of 212392940 is about 596.6413639836.

The spelling of 212392940 in words is "two hundred twelve million, three hundred ninety-two thousand, nine hundred forty".