212655190 has 16 divisors (see below), whose sum is σ = 417577680. Its totient is φ = 77329120.

The previous prime is 212655187. The next prime is 212655221. The reversal of 212655190 is 91556212.

It is a super-2 number, since 2×212655190² = 90444459667872200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966505 + ... + 966724.

It is an arithmetic number, because the mean of its divisors is an integer number (26098605).

Almost surely, 2^212655190 is an apocalyptic number.

212655190 is a deficient number, since it is larger than the sum of its proper divisors (204922490).

212655190 is a wasteful number, since it uses less digits than its factorization.

212655190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933247.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 212655190 is about 14582.7017387040. The cubic root of 212655190 is about 596.8868285806.

The spelling of 212655190 in words is "two hundred twelve million, six hundred fifty-five thousand, one hundred ninety".