212798450 has 18 divisors (see below), whose sum is σ = 395997069. Its totient is φ = 85078120.

The previous prime is 212798447. The next prime is 212798473. The reversal of 212798450 is 54897212.

It can be written as a sum of positive squares in 2 ways, for example, as 208542481 + 4255969 = 14441^2 + 2063^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10315.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102119 + ... + 104181.

Almost surely, 2^212798450 is an apocalyptic number.

212798450 is a deficient number, since it is larger than the sum of its proper divisors (183198619).

212798450 is an frugal number, since it uses more digits than its factorization.

212798450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 212798450 is about 14587.6128958785. The cubic root of 212798450 is about 597.0208339507.

The spelling of 212798450 in words is "two hundred twelve million, seven hundred ninety-eight thousand, four hundred fifty".