212722946 has 8 divisors (see below), whose sum is σ = 330087420. Its totient is φ = 102693808.

The previous prime is 212722933. The next prime is 212722967. The reversal of 212722946 is 649227212.

It can be written as a sum of positive squares in 2 ways, for example, as 205492225 + 7230721 = 14335^2 + 2689^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1833761 + ... + 1833876.

Almost surely, 2^212722946 is an apocalyptic number.

212722946 is a deficient number, since it is larger than the sum of its proper divisors (117364474).

212722946 is a wasteful number, since it uses less digits than its factorization.

212722946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667668.

The product of its digits is 24192, while the sum is 35.

The square root of 212722946 is about 14585.0247171542. The cubic root of 212722946 is about 596.9502150255.

The spelling of 212722946 in words is "two hundred twelve million, seven hundred twenty-two thousand, nine hundred forty-six".