212555460 has 48 divisors (see below), whose sum is σ = 640938816. Its totient is φ = 52321152.

The previous prime is 212555449. The next prime is 212555467. The reversal of 212555460 is 64555212.

212555460 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (212555467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135474 + ... + 137033.

It is an arithmetic number, because the mean of its divisors is an integer number (13352892).

Almost surely, 2^212555460 is an apocalyptic number.

212555460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212555460 is an abundant number, since it is smaller than the sum of its proper divisors (428383356).

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

212555460 is a wasteful number, since it uses less digits than its factorization.

212555460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272532 (or 272530 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 212555460 is about 14579.2818753188. The cubic root of 212555460 is about 596.7935056267.

The spelling of 212555460 in words is "two hundred twelve million, five hundred fifty-five thousand, four hundred sixty".