212750226 has 40 divisors (see below), whose sum is σ = 513393804. Its totient is φ = 65460960.

The previous prime is 212750191. The next prime is 212750231. The reversal of 212750226 is 622057212.

It can be written as a sum of positive squares in 2 ways, for example, as 156275001 + 56475225 = 12501^2 + 7515^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 212750226.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 48405 + ... + 52616.

Almost surely, 2^212750226 is an apocalyptic number.

212750226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

212750226 is an abundant number, since it is smaller than the sum of its proper divisors (300643578).

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

212750226 is a wasteful number, since it uses less digits than its factorization.

212750226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101048 (or 101039 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 212750226 is about 14585.9598929930. The cubic root of 212750226 is about 596.9757319496.

The spelling of 212750226 in words is "two hundred twelve million, seven hundred fifty thousand, two hundred twenty-six".