212855460 has 24 divisors (see below), whose sum is σ = 595995456. Its totient is φ = 56761440.

The previous prime is 212855459. The next prime is 212855471. The reversal of 212855460 is 64558212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1773736 + ... + 1773855.

It is an arithmetic number, because the mean of its divisors is an integer number (24833144).

Almost surely, 2^212855460 is an apocalyptic number.

212855460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212855460 is an abundant number, since it is smaller than the sum of its proper divisors (383139996).

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

212855460 is a wasteful number, since it uses less digits than its factorization.

212855460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547603 (or 3547601 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 212855460 is about 14589.5668201630. The cubic root of 212855460 is about 597.0741443620.

The spelling of 212855460 in words is "two hundred twelve million, eight hundred fifty-five thousand, four hundred sixty".