212857248 has 48 divisors (see below), whose sum is σ = 559724256. Its totient is φ = 70828800.

The previous prime is 212857241. The next prime is 212857259. The reversal of 212857248 is 842758212.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×212857248² = 90616416052267008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212857241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65715 + ... + 68877.

It is an arithmetic number, because the mean of its divisors is an integer number (11660922).

Almost surely, 2^212857248 is an apocalyptic number.

It is an amenable number.

212857248 is an abundant number, since it is smaller than the sum of its proper divisors (346867008).

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

212857248 is a wasteful number, since it uses less digits than its factorization.

212857248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877 (or 3869 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 212857248 is about 14589.6280966994. The cubic root of 212857248 is about 597.0758161782.

The spelling of 212857248 in words is "two hundred twelve million, eight hundred fifty-seven thousand, two hundred forty-eight".