212997190 has 32 divisors (see below), whose sum is σ = 440979264. Its totient is φ = 72558720.

The previous prime is 212997179. The next prime is 212997241. The reversal of 212997190 is 91799212.

It is a happy number.

212997190 is nontrivially palindromic in base 13.

It is a super-2 number, since 2×212997190² = 90735605895792200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1300 + ... + 20680.

It is an arithmetic number, because the mean of its divisors is an integer number (13780602).

Almost surely, 2^212997190 is an apocalyptic number.

212997190 is an abundant number, since it is smaller than the sum of its proper divisors (227982074).

212997190 is a wasteful number, since it uses less digits than its factorization.

212997190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19552.

The product of its (nonzero) digits is 20412, while the sum is 40.

The square root of 212997190 is about 14594.4232499952. The cubic root of 212997190 is about 597.2066357457.

The spelling of 212997190 in words is "two hundred twelve million, nine hundred ninety-seven thousand, one hundred ninety".