212464857 has 16 divisors (see below), whose sum is σ = 309454848. Its totient is φ = 128593680.

The previous prime is 212464843. The next prime is 212464867. The reversal of 212464857 is 758464212.

It is not a de Polignac number, because 212464857 - 2⁸ = 212464601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212464867) 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, 23248 + ... + 31070.

It is an arithmetic number, because the mean of its divisors is an integer number (19340928).

Almost surely, 2^212464857 is an apocalyptic number.

It is an amenable number.

212464857 is a deficient number, since it is larger than the sum of its proper divisors (96989991).

212464857 is a wasteful number, since it uses less digits than its factorization.

212464857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8660.

The product of its digits is 107520, while the sum is 39.

The square root of 212464857 is about 14576.1742923169. The cubic root of 212464857 is about 596.7086980090.

The spelling of 212464857 in words is "two hundred twelve million, four hundred sixty-four thousand, eight hundred fifty-seven".