212345092 has 12 divisors (see below), whose sum is σ = 371842380. Its totient is φ = 106104416.

The previous prime is 212345057. The next prime is 212345093. The reversal of 212345092 is 290543212.

It can be written as a sum of positive squares in 2 ways, for example, as 66031876 + 146313216 = 8126^2 + 12096^2 .

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 212345092.

It is not an unprimeable number, because it can be changed into a prime (212345093) 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, 9667 + ... + 22762.

It is an arithmetic number, because the mean of its divisors is an integer number (30986865).

Almost surely, 2^212345092 is an apocalyptic number.

It is an amenable number.

212345092 is a deficient number, since it is larger than the sum of its proper divisors (159497288).

212345092 is a wasteful number, since it uses less digits than its factorization.

212345092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34070 (or 34068 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 212345092 is about 14572.0654678738. The cubic root of 212345092 is about 596.5965567189.

The spelling of 212345092 in words is "two hundred twelve million, three hundred forty-five thousand, ninety-two".