212406080 has 56 divisors (see below), whose sum is σ = 513392928. Its totient is φ = 83685888.

The previous prime is 212406071. The next prime is 212406097. The reversal of 212406080 is 80604212.

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 7 ways as a sum of consecutive naturals, for example, 16487 + ... + 26393.

Almost surely, 2^212406080 is an apocalyptic number.

212406080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212406080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256696464).

212406080 is an abundant number, since it is smaller than the sum of its proper divisors (300986848).

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

212406080 is an equidigital number, since it uses as much as digits as its factorization.

212406080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9991 (or 9981 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 212406080 is about 14574.1579516623. The cubic root of 212406080 is about 596.6536677602.

The spelling of 212406080 in words is "two hundred twelve million, four hundred six thousand, eighty".