212254340 has 12 divisors (see below), whose sum is σ = 445734156. Its totient is φ = 84901728.

The previous prime is 212254337. The next prime is 212254351. The reversal of 212254340 is 43452212.

It is a happy number.

212254340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 30382144 + 181872196 = 5512^2 + 13486^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5306339 + ... + 5306378.

It is an arithmetic number, because the mean of its divisors is an integer number (37144513).

Almost surely, 2^212254340 is an apocalyptic number.

212254340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212254340 is an abundant number, since it is smaller than the sum of its proper divisors (233479816).

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

212254340 is a wasteful number, since it uses less digits than its factorization.

212254340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612726 (or 10612724 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 212254340 is about 14568.9512319865. The cubic root of 212254340 is about 596.5115535053.

The spelling of 212254340 in words is "two hundred twelve million, two hundred fifty-four thousand, three hundred forty".