212555430 has 24 divisors (see below), whose sum is σ = 552644352. Its totient is φ = 56681424.

The previous prime is 212555401. The next prime is 212555449. The reversal of 212555430 is 34555212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 212555394 and 212555403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1180774 + ... + 1180953.

It is an arithmetic number, because the mean of its divisors is an integer number (23026848).

Almost surely, 2^212555430 is an apocalyptic number.

212555430 is an abundant number, since it is smaller than the sum of its proper divisors (340088922).

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

212555430 is a wasteful number, since it uses less digits than its factorization.

212555430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361740 (or 2361737 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 212555430 is about 14579.2808464615. The cubic root of 212555430 is about 596.7934775496.

The spelling of 212555430 in words is "two hundred twelve million, five hundred fifty-five thousand, four hundred thirty".