212495406 has 16 divisors (see below), whose sum is σ = 425626704. Its totient is φ = 70725824.

The previous prime is 212495401. The next prime is 212495407. The reversal of 212495406 is 604594212.

212495406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212495406² = 90308595142209672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212495401) 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, 22095 + ... + 30218.

It is an arithmetic number, because the mean of its divisors is an integer number (26601669).

Almost surely, 2^212495406 is an apocalyptic number.

212495406 is an abundant number, since it is smaller than the sum of its proper divisors (213131298).

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

212495406 is a wasteful number, since it uses less digits than its factorization.

212495406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52995.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 212495406 is about 14577.2221633616. Note that the first 3 decimals coincide. The cubic root of 212495406 is about 596.7372956489.

The spelling of 212495406 in words is "two hundred twelve million, four hundred ninety-five thousand, four hundred six".