212406006 has 16 divisors (see below), whose sum is σ = 426382848. Its totient is φ = 70540200.

The previous prime is 212406001. The next prime is 212406023. The reversal of 212406006 is 600604212.

It is a happy number.

It is a super-2 number, since 2×212406006² = 90232622769744072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212406001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63690 + ... + 66941.

It is an arithmetic number, because the mean of its divisors is an integer number (26648928).

Almost surely, 2^212406006 is an apocalyptic number.

212406006 is an abundant number, since it is smaller than the sum of its proper divisors (213976842).

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

212406006 is a wasteful number, since it uses less digits than its factorization.

212406006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130907.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 212406006 is about 14574.1554129219. The cubic root of 212406006 is about 596.6535984709.

The spelling of 212406006 in words is "two hundred twelve million, four hundred six thousand, six".