212894073 has 18 divisors (see below), whose sum is σ = 357720714. Its totient is φ = 121653504.

The previous prime is 212894053. The next prime is 212894083. The reversal of 212894073 is 370498212.

It can be written as a sum of positive squares in only one way, i.e., 208744704 + 4149369 = 14448^2 + 2037^2 .

It is not a de Polignac number, because 212894073 - 2⁹ = 212893561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212894053) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 240936 + ... + 241817.

It is an arithmetic number, because the mean of its divisors is an integer number (19873373).

Almost surely, 2^212894073 is an apocalyptic number.

It is an amenable number.

212894073 is a deficient number, since it is larger than the sum of its proper divisors (144826641).

212894073 is a wasteful number, since it uses less digits than its factorization.

212894073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482773 (or 482763 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 212894073 is about 14590.8900688066. The cubic root of 212894073 is about 597.1102462157.

The spelling of 212894073 in words is "two hundred twelve million, eight hundred ninety-four thousand, seventy-three".